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Engine-Codes - Chevrolet - P0AFA CHEVROLET

P0AFA CHEVROLET - Hybrid Battery System Voltage Low

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

P0AFA CHEVROLET Possible Causes

What does this mean?
  • 36 volt battery cable open
  • Hybrid Battery Pack fuse open
  • Hybrid Battery Pack contactor open
  • Hybrid Battery Pack ground cable or connection

How is the P0AFA CHEVROLET code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Tech Notes

What does this mean?
If the 1.8L engine (RPO LKN) on a 2016-2017 Malibu Hybrid model does not crank after several attempts and DTC P0AFA (Hybrid/EV Battery System Voltage Low Voltage) is set, it may be necessary to replace the high voltage battery pack.
After excessive engine crank attempts where the engine turns over but does not start, the high voltage battery pack will be drained of power, similar to draining a 12V battery in a traditional powertrain.
The high voltage battery pack stores 288V DC in eight lithium–ion battery sections. The high voltage battery pack is charged during normal vehicle driving and is maintained at or near an optimum level of charge.

What is the cost to diagnose the P0AFA CHEVROLET code

Labor: 1.0

The cost to diagnose the P0AFA CHEVROLET code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0AFA CHEVROLET Meaning

The Engine Control Module (ECM) monitors the correlation of the generator battery disconnect control module battery voltage and the Starter Generator Control Module (SGCM) output voltage to detect a 36 volt cable open or fuse/relay failure. The ECM also monitors to detect an over voltage condition and protect the MOSFET (load dump). If either one of these conditions is detected, the appropriate Diagnostic Trouble Code (DTC) will set.

More Information

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