The P305F code is related to the dual battery control module in a vehicle. This system uses two batteries – a primary 12V battery and an auxiliary 12V battery. The dual battery control module switches between the two batteries to support vehicle loads and battery charging. During engine crank, the auxiliary battery is switched in to supply ... The dual battery control module switches the 12 V primary battery and 12 V auxiliary battery in and out at appropriate times to support vehicle loads and battery …The 2015 Chevrolet Malibu has 1 problems reported for dual battery module failure. Average failure mileage is 50,000 miles. ... DTC P305F, P058B. Replaced both batteries - main and aux.During engine crank, the auxiliary battery is switched in to supply voltage to the vehicle loads (except the starter motor which receives voltage from the primary battery) and the …Not much is really explained to well as is expected. It says to check wiring, connectors Battery Negative sensor, Dual Battery Control module and auxiliary battery that normally sits in the trunk if not other places. My personal experience of this was I initially had P305F and P058B show up on my scan tool.A P305F code is a manufacturer specific diagnostic trouble code (DTC) and refers to a system uses a dual battery configuration which includes a 12 V ... (DTC) P305F: Dual Battery Control Module Performance has been set in the Engine Control Module (ECM). There may be several different causes of this code setting and before any …P305F. Dual Battery Control Module Performance. Learn More. 4/10 P0449. Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction. Learn More Fixes. 8/10 P0089. Fuel Pressure Regulator Performance. Learn More Fixes. U1000. SCP (J1850) Invalid or Missing Data for Primary Id.2014 Chevrolet Malibu Body Control Computer. 2014 Chevrolet Malibu Electronic Throttle Controller. 2014 Chevrolet Malibu Engine Control Computer. 2014 Chevrolet Malibu Fuel Pump Driver Module. 2014 Chevrolet Malibu Object Sensor Module. Not much is really explained to well as is expected. It says to check wiring, connectors Battery Negative sensor, Dual Battery Control module and auxiliary battery that normally sits in the trunk if not other places. My personal experience of this was I initially had P305F and P058B show up on my scan tool.2014 Chevrolet Malibu Body Control Computer. 2014 Chevrolet Malibu Electronic Throttle Controller. 2014 Chevrolet Malibu Engine Control Computer. 2014 Chevrolet Malibu Fuel Pump Driver Module. 2014 Chevrolet Malibu Object Sensor Module. Code P305F Description. This system uses a dual battery configuration which includes the 12 V primary battery and 12 V auxiliary battery. The dual battery control module switches the 12 V primary battery and 12 V auxiliary battery in and out at appropriate times to support vehicle loads and battery charging. During engine crank, the auxiliary ...Discover new artists and listen to full albums from your favorite bands. Watch their music videos complete with lyrics, song meanings and biographies. All for free, and available on all devices at SonicHits.com.The dual battery control module switches the 12 V primary battery and 12 V auxiliary battery in and out at appropriate times to support vehicle loads and battery charging. During engine crank, the auxiliary battery is switched in to supply voltage to the vehicle loads (except the starter motor which receives voltage from the primary battery) and the …Lead Technician/ now retired. High School or GED. 2,777 satisfied customers. 2015 Malibu 2.5 code P305F Hada. P305F Had auxiliary battery. Checked connections,fuses in engine under hood,had auxiliary barr … read more.Ask a Chevy Mechanic for Answers ASAP. Check engine light for 2015 chevy impala code P305F. Stay…. Defective Battery Control Module. The service bulletin deals with the steps needed to check these things to help narrow down the cause. I have enclosed the service bulletin in the link below for your review, if you follow the steps in the ...P305F. Dual Battery Control Module Performance. Learn More. 8/10 P0089. Fuel Pressure Regulator Performance. Learn More Fixes. U1000. SCP (J1850) Invalid or Missing Data for Primary Id. Learn More. U0107. Lost Communication With Throttle Actuator Control Module. Learn More. P1345. SGC (Cam Position) Sensor Circuit Malfunction/ Crankshaft ...P305F Cadillac 1,391 Views. Dual Battery Control Module Performance. P3051 Cadillac 721 Views. DC/DC Converter Actuator Voltage Sensor Circuit 1 Low Voltage.P305F. Dual Battery Control Module Performance. Learn More. 8/10 P0106. Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem. Learn More Fixes. 9/10 P0011. Intake Camshaft Position Timing - Over-Advanced (Bank 1) Learn More Fixes. 7/10 P0420. Catalyst System Efficiency Below Threshold (Bank 1) Learn More …P0607 is a diagnostic trouble code (DTC) for "Control Module Performance". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $154.99 .The battery current sensor monitors the flow of currents into and out of a battery. Often, it clamps onto the negative battery cable to measure the flow, and sends signals to the body control module (BCM) or powertrain control module (PCM). The modules then make adjustments to the current in the system through the alternator.The ABS control module is a crucial component of your vehicle’s braking system. It plays a vital role in ensuring the safety and stability of your car, especially during emergency braking situations.P305F. Dual Battery Control Module Performance. Learn More. 8/10 P0301. Cylinder 1 Misfire Detected. Learn More Fixes. 9/10 P0300. Random/Multiple Cylinder Misfire ... Discover new artists and listen to full albums from your favorite bands. Watch their music videos complete with lyrics, song meanings and biographies. All for free, and available on all devices at SonicHits.com.P305F. Dual Battery Control Module Performance. Learn More. 8/10 P0301. Cylinder 1 Misfire Detected. Learn More Fixes. P0108. Manifold Absolute Pressure/Barometric Pressure Circuit High Input. Learn More. 3/10 P0441. Evaporative Emission Control System Incorrect Purge flow. Learn More Fixes. U0101. Lost Communication with TCM. Learn …Batteries and bulbs are essential items that we use every day in our homes, offices, and other places. Whether you need them for your flashlight, remote control, or any other device, it’s important to know where to find them and how to save...DTC P305F Dual Battery Control Module Performance Diagnostic Fault Information Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance B+ — P305F — P305F Ignition — P305F — P305F Control — P305F — P305F ... Caution: Do not disconnect the K125 Dual Battery Control Module harness connector with the …If your chevy malibu is experiencing any of the following symptoms, it may have a p0013 code: Web the code p305f meaning on the chevy malibu is for dual battery control module performance. This vehicle has two batteries, a primary and a secondary one. Chevy Code P1133 Malibu Troubleshooting Correct 1999.P305F Buick 1,275 Views. Dual Battery Control Module Performance. ... P305F Chevrolet 71,776 Views. Dual Battery Control Module Performance. P305F GMC 1,310 Views. The p305f code indicates a performance issue with the module. Source: www.youtube.com Check Details. Web chevy malibu 2015 code p305f. Web the code p305f meaning on the chevy malibu is for dual battery control module performance. Source: www.youtube.com Check Details. Web the cca being 200 under means the rc is also …How to fix a Chevrolet P305F Code: Dual Battery Control Module Performance Dual Battery Control Module: https://amzn.to/48wD42RService …Code P305F Chevrolet Tech Notes. There may be several different causes of this code setting and before any component replacements, please follow the recommendations below. - Inspect for loose unsecured electrical ground. - Verify the engine harness is not pinched underneath the main battery tray. - Inspect both main and auxiliary battery cables ...Chevy malibu bad auxiliary battery replace. Code p305f dual battery control module performance. Like comment share for more videos. Thank You.The Dual Battery Control Module regulates the voltage when the Powertrain Control Module (PCM) cuts power to the engine. Performance. The secondary battery voltage must be below 8.9 volts for 2 out of 3 engine starts. If it falls below that threshold, P305F will be stored in the PCM's memory, and the check engine light will come on.Inspect the following if DTC P305F has been set: 4005667 1. Check state of health of auxiliary battery with the GR8 tester. Not just a state of charge check. • If low, replace the battery, clear codes and re-check. • If good, proceed to step 2. 2. Check ground resistance from the Dual Battery Isolation Module (DBIM) to G103. Wiggle the P305F. Dual Battery Control Module Performance. Learn More. 9/10 P0300. Random/Multiple Cylinder Misfire Detected. Learn More Fixes. 4/10 P0449. Evaporative Emission ... The ABS control module is a crucial component of your vehicle’s braking system. It plays a vital role in ensuring the safety and stability of your car, especially during emergency braking situations.The 2015 Chevrolet Malibu has 1 problems reported for dual battery module failure. Average failure mileage is 50,000 miles. ... DTC P305F, P058B. Replaced both batteries - main and aux. This preliminary informational bulletin provides technicians a diagnostic tip when DTC p305f: dual battery control module performance, has been set. Discuss it at Forum View This TSB. TSB Number: PIC5626B NHTSA Number: 10113446 TSB Date: February 23, 2017 Date Added to File: August 15, 2017 Failing Component: Electrical …Web a ‘p305f’ code on a chevy malibu means that the auxiliary battery is not delivering sufficient voltage to the ecm. They could certainly be right about the amp leading to the code as p305f is dual battery control module performance out of spec. Web chevy malibu 2015 code p305f. Web The Cca Being 200 Under Means The Rc Is Also Probably A ...P305F. Dual Battery Control Module Performance. Learn More. 8/10 P0089. Fuel Pressure Regulator Performance. Learn More Fixes. U1000. SCP (J1850) Invalid or Missing ...#18-NA-367 - Diagnostic Tip for Malfunction Indicator Lamp (MIL) Illuminated with DTC P305F, P058B and/or P058D and/or Various Driveability or Electrical Issues - (Oct 27, 2021). Service Bulletins - Service manuals, electrical schematics and bulletins for 1995 to current GM vehicles.This code indicates an issue with the battery. Here is some info for you. P305F CHEVROLET - Dual Battery Control Module Performance Read more: https: ...It's complicated, but charts are shown as this guy diagnoses a P305F code. He checks the rear battery and the connections along with connections under the front battery, ... That problem with the auto start/stop feature sometimes lies within the dual battery control module that sits right on top of the battery.An ignition control module is a component in a vehicle’s engine that enables a spark to be produced at the correct time in each cylinder. It does much the same job as contact breaker points did in older cars.If you are having this problem and getting the p305f trouble code, your problem could be with the dual battery control/isolation module. My Malibu was doing the exact same thing. The auxilary battery tested good and all battery connections were tight. The dual battery isolation module is located on top of the battery distribution fuse block ...Lead Technician/ now retired. High School or GED. 2,777 satisfied customers. 2015 Malibu 2.5 code P305F Hada. P305F Had auxiliary battery. Checked connections,fuses in engine under hood,had auxiliary barr … read more.Oct 23, 2018 · It gave me 2 codes. The first one, "P305F" which is listed as "Dual battery control module performance" with possible causes of low battery charge, faulty battery, battery harness is open or shorted, and battery circuit poor electrical connection. The second code was "P12A8" - Boost pressure sensor pressure too low. Inspect the following if DTC P305F has been set: 4005667 1. Check state of health of auxiliary battery with the GR8 tester. Not just a state of charge check. • If low, replace the battery, clear codes and re-check. • If good, proceed to step 2. 2. Check ground resistance from the Dual Battery Isolation Module (DBIM) to G103. Wiggle theP305F. Dual Battery Control Module Performance. Learn More. 8/10 P0089. Fuel Pressure Regulator Performance. Learn More Fixes. U0107. Lost Communication With Throttle Actuator Control Module. Learn More. 9/10 U0073. Control Module Communication Bus "A" Off. Learn More Fixes. P1101. MAF Sensor Out Of Self Test …Check Vehicle Fit. Electronic Stability System Control Module 24 Pin; Mates With Connector OE Number: 13574909; Active Front Lower Grille Shutters (VRI) 1 Year Limited Warranty. Length (in): 5-7/8 Inch. Width (in): 5-3/8 Inch. Terminal Type: Blade, Pin. Your body control module can fail due to shock, vibration, or excessive heat.Lead Technician/ now retired. High School or GED. 2,777 satisfied customers. 2015 Malibu 2.5 code P305F Hada. P305F Had auxiliary battery. Checked connections,fuses in engine under hood,had auxiliary barr … read more.Search results for "P305F" P305F 23,417 Views. Dual Battery Control Module Performance. P305F Buick 1,243 Views. ... Dual Battery Control Module Performance. P305F ...P305F. Dual Battery Control Module Performance. Learn More. 8/10 P0089. Fuel Pressure Regulator Performance. Learn More Fixes. U0107. Lost Communication With Throttle ...P305F. Dual Battery Control Module Performance. Learn More. 8/10 P0089. Fuel Pressure Regulator Performance. Learn More Fixes. U1000. SCP (J1850) Invalid or Missing ...Apr 29, 2021 · Ask a Chevy Mechanic for Answers ASAP. Check engine light for 2015 chevy impala code P305F. Stay…. Defective Battery Control Module. The service bulletin deals with the steps needed to check these things to help narrow down the cause. I have enclosed the service bulletin in the link below for your review, if you follow the steps in the ... Reparationsoplysninger til P2223-kode. Lær hvad betyder P2223 NOx Sensor Heater Sense Circuit Low Bank 2?Sep 13, 2020 · The code p305f meaning on the Chevy Malibu is for dual battery control module performance. This vehicle has two batteries, a primary and a secondary one. The control module is responsible for switching from the first and second one as needed so that one can charge, or so that both can work under heavy load. If the system is not working then You ... P305F means dual battery control module performance! And you have to be sure both batteries are charged up and good to go, if that’s the case, just reset the …P305F - Dual Battery Control Module Performance - TSB for Code P305F. Models. 2014-2015 Chevrolet Malibu 2016 Malibu Limited (VIN 1) Equipped with Start/Stop System (RPO KL9) ... Dual Battery Control Module Performance. System description. The configuration in this system uses two batteries a primary battery in the front and auxiliary battery ...The control panel on your computer is a powerful tool that allows you to manage and optimize various aspects of your system. From adjusting display settings to troubleshooting hardware issues, the control panel provides a centralized hub fo...The P305F code is related to the dual battery control module in a vehicle. This system uses two batteries – a primary 12V battery and an auxiliary 12V battery. The dual battery control module switches between the two batteries to support vehicle loads and battery charging. During engine crank, the auxiliary battery is switched in to supply ...Видео: p305f - dual battery control module performance fixed fast & easy - chevy malibu, cruze & many more Съдържание. Възможни причини; Технически бележки; Кога е открит кодът? Възможни симптоми; p0607 ford ОписаниеВидео: p305f - dual battery control module performance fixed fast & easy - chevy malibu, cruze & many more Съдържание. Възможни причини; Технически бележки; Кога е открит кодът? Възможни симптоми; p0607 ОписаниеDuring engine crank, the auxiliary battery is switched in to supply voltage to the vehicle loads (except the starter motor which receives voltage from the primary battery) and the …May 16, 2019 · Code P305F Description. This system uses a dual battery configuration which includes the 12 V primary battery and 12 V auxiliary battery. The dual battery control module switches the 12 V primary battery and 12 V auxiliary battery in and out at appropriate times to support vehicle loads and battery charging. During engine crank, the auxiliary ... May 16, 2019 · Code P305F Cadillac Description. This system uses a dual battery configuration which includes the 12 V primary battery and 12 V auxiliary battery. The dual battery control module switches the 12 V primary battery and 12 V auxiliary battery in and out at appropriate times to support vehicle loads and battery charging. Видео: p305f - dual battery control module performance fixed fast & easy - chevy malibu, cruze & many more Съдържание. Възможни причини; Технически бележки; Кога е открит кодът? Възможни симптоми; p0607 2011 nissan altima sedan ОписаниеThe dual battery control module switches the 12 V primary battery and 12 V auxiliary battery in and out at appropriate times to support vehicle loads and battery charging. During engine crank, the auxiliary battery is switched in to supply voltage to the vehicle loads (except the starter motor which receives voltage from the primary battery) …I have a 2015 malibu eco got both battery check and were told both where good. ... This code indicates an issue with the battery. Here is some info for you. P305F CHEVROLET - Dual Battery Control Module Performance Read more: https: ...Inspect the following if DTC P305F has been set: 4005667 1. Check state of health of auxiliary battery with the GR8 tester. Not just a state of charge check. • If low, replace the battery, clear codes and re-check. • If good, proceed to step 2. 2. Check ground resistance from the Dual Battery Isolation Module (DBIM) to G103. Wiggle thein this video I will share with you how to test a dual battery control module on Chevrolet Malibu, this issue caused the ignition key to get stuck in the ign...P305F. Dual Battery Control Module Performance. Learn More. 9/10 P0300. Random/Multiple Cylinder Misfire Detected. Learn More Fixes. 4/10 P0449. Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction. Learn More Fixes. 8/10 P0089. Fuel Pressure Regulator Performance.What Does the P305F Cadillac Code Mean? This system uses a dual battery configuration which includes the 12 V primary battery and 12 V auxiliary battery. The dual battery control module switches the 12 V primary battery and 12 V auxiliary battery in and out at appropriate times to support vehicle loads and battery charging. P305F. Dual Battery Control Module Performance. Learn More. 4/10 P0449. Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction. Learn More Fixes ...It says Cause: DBIM INTERNAL OPEN 18-NA-367 Replaced fuse block located on top of battery replaced a connector and one block All test indicate dual battery isolation module has internal open removed and replaced dual battery isolation module and installed new pigtail I have e a 15 Chevy Malibu lt 4 cylinderI have a 2015 malibu eco got both battery check and were told both where good. ... This code indicates an issue with the battery. Here is some info for you. P305F CHEVROLET - Dual Battery Control Module Performance Read more: https: ...Lær hvad betyder P305f Dual Battery Control Module Performance? cardigital. Hjem; Auto-Koder; Auto-Koder. P305F - Dual Battery Control Module Performance Posted on Juni 2023. Forfatter: Joan Hall. Oprettelsesdato: 5 Januar 2021. Opdateringsdato: 1 Juni 2023. Video.: P305F - DUAL BATTERY CONTROL MODULE PERFORMANCE FIXED …2015 Malibu 2.5 code P305F Hada. P305F Had auxiliary battery checked its good. Checked connections,fuses in engine under - Answered by a verified Chevy Mechanic ... I have a 2016 Chevy Malibu 2.5 L engine code P305F dual. I have a 2016 Chevy Malibu 2.5 L engine code P305F dual battery control module performance. ...⭐️⭐️⭐️⭐️⭐️ When is winter weather forecast. Watch the video explanation about: CHEVY MALIBU P305F DUAL BATTERY FAULT DIAGNOSIS PART 1 Online, without registration.P305F Check Engine Code. Jump to Latest Follow 119784 Views 45 Replies 24 Participants Last post by grico95215, Sep 1, 2022. M. Malibu. ... Source of the problem Ending being the DUAL BATTERY CONTROL MODULE ( DBCM ) Got it at a local auto dismantlers for the price of 15$ dealer wanted over $400 . This applies from 2013 - 2015 …scan pcm. dtc p305f – dual battery control module performance stored. disconnect and test underhood and auxiliary batteries. found trunk mount auxiliary battery failed. replace auxiliary battery, reconnect underhood battery, clear dtc. perform engine idle learn. found failed left front tire pressure sensor. replace and program tire pressure ...2015 Chevy Malibu P305F Code . The code p305f meaning on the chevy malibu is for dual battery control module performance. P305f had auxi...Code P305F Description. This system uses a dual battery configuration which includes the 12 V primary battery and 12 V auxiliary battery. The dual battery control module switches the 12 V primary battery and 12 V auxiliary battery in and out at appropriate times to support vehicle loads and battery charging. During engine crank, the auxiliary ...Oct 23, 2018 · It gave me 2 codes. The first one, "P305F" which is listed as "Dual battery control module performance" with possible causes of low battery charge, faulty battery, battery harness is open or shorted, and battery circuit poor electrical connection. The second code was "P12A8" - Boost pressure sensor pressure too low. The code p305f meaning on the Chevy Malibu is for dual battery control module performance. This vehicle has two batteries, a primary and a secondary one. The control module is responsible for switching from the first and second one as needed so that one can charge, or so that both can work under heavy load. If the system is not working then You ...A transmission control module is a mechanism that regulates a vehicle’s automatic transmission by processing electrical signals. Sensors electronically send information to the transmission control module, and this information is used to cal...A dual-fuel heat pump system pairs an electric heat pump with a gas furnace to efficiently control your home’s climate during every season. Expert Advice On Improving Your Home Videos Latest View All Guides Latest View All Radio Show Latest...
Apr 1, 2019 · This warranty administration bulletin provide policy information on using the el-50313 midtronics gr8 battery tester/charger for diagnosing battery replacements and maintaining batteries on new vehicles in dealer inventory. Discuss it at Forum View This TSB. TSB Number: PIC6040 NHTSA Number: 10073896 TSB Date: November 1, 2014 Date Added to File: . Darryl stuckey
The 2015 Chevrolet Malibu has 1 problems reported for dual battery module failure. Average failure mileage is 50,000 miles. ... DTC P305F, P058B. Replaced both batteries - main and aux.In part 2 of this case study about a 2014 Chevrolet Malibu LT w/ a 2.5L ecotech engine, we will go over how the dual battery control module works and try and...This preliminary informational bulletin provides technicians a diagnostic tip when DTC p305f: dual battery control module performance, has been set. Discuss it at Forum View This TSB. TSB Number: PIC5626B NHTSA Number: 10113446 TSB Date: February 23, 2017 Date Added to File: August 15, 2017 Failing Component: Electrical …Source of the problem Ending being the DUAL BATTERY CONTROL MODULE ( DBCM ) Got it at a local auto dismantlers for the price of 15$ dealer wanted over $400 . This applies from 2013 - 2015 chevy Malibu as well mine is just a split year with the same body styles as the ones from 13-15 hope this helps ! easy fix at home !Lyrics, Song Meanings, Videos, Full Albums & Bios: Frozen Hearts, Project Bitch ft. Rylo Rodriguez, Ride the Wave, Story to Tell, Free Game, Narcos, Cry Me a River ...As I understand it, the large battery under the hood is what starts the engine, and the smaller battery is what keeps the radio and other circuits alive while the engine is stopped. Your issue could be with the smaller battery, the control module, or a wiring connection (least likely, but still worth mentioning).Mid-December 2018, Volume 20, No. 24 CONTENTS Customer Care and Aftersales continued on page 2 GM Training Programs for Dealership Service Technician Candidates 1 Diagnostic Tips for Battery DTCs 3 Vibration during Hard Acceleration 4 Service Technician Enrollment in the 2019 Mark of Excellence Program 4 Front Roof …P305F Chevrolet Code - Dual Battery Control Module Performance Table of contents What are the Possible Causes of the P305F Chevrolet Code? Tech Notes How to Fix the P305F Chevrolet Code? What is the Cost to Diagnose the P305F Chevrolet Code? What Does the P305F Chevrolet Code Mean? ChatAC AutoCodes.com AI Chat What does this mean? Disconnect the X2 harness connector at the K20 Engine Control Module and disconnect the KR27 Starter Relay. Test for infinite resistance between the control circuit terminal 2 at the K125 Dual Battery Control Module and B+ terminal of the C1 Battery. If less than infinite resistance Repair the short to voltage on the circuit. If infinite resistanceDec 6, 2018 · Chevrolet TSB PI1412A. Diagnostic Tip For Malfunction Indicator Lamp (Mil) Illuminated With DTC P305F, P058B And/Or P058D. Technicians may find the diagnostic trouble code (DTC) P305F: Dual Battery Control Module Performance has been set in the Engine Control Module (ECM). There may be several different causes of this code setting and before ... Technicians may find the diagnostic trouble code (DTC) P305F: Dual Battery Control Module Performance has been set in the Engine Control Module (ECM). There may be several different causes of this code setting and before any component replacements, please follow the recommendations below. Several issues can cause this code. The p305f code indicates a performance issue with the module. Source: www.youtube.com Check Details. Web the cca being 200 under means the rc is also probably a little lower. They could certainly be right about the amp leading to the code as p305f is dual battery control module performance out of spec.Видео: p305f - dual battery control module performance fixed fast & easy - chevy malibu, cruze & many more Съдържание. Възможни причини; Технически бележки; Кога е открит кодът? Възможни симптоми; p0607 2011 nissan altima sedan ОписаниеP305F. Dual Battery Control Module Performance. Learn More. 9/10 P0300. Random/Multiple Cylinder Misfire Detected. Learn More Fixes. 8/10 P0089. Fuel Pressure ...June 28, 2022 by Jason. Late-model Chevy Malibu’s and Impala’s use two batteries to help power their auto-start feature. The P305F code indicates a performance issue with the module that controls the two batteries. In reality, P305F is usually caused by low voltage in the auxiliary battery..