P305F on Chevrolet

Dual battery control module performance (Chevrolet Malibu eAssist)

Severity: Severity not verified — if the car runs badly, have it inspected

The GM bulletins read describe the code and a diagnostic tip but do not say whether the car is safe to drive.

It gets more serious if:

Stop: Stop and have the car towed if there is smoke or a burning smell from under the hood. GM opened a field investigation into underhood smoke or burning odor with P305F or P058D.

This page covers only what differs on Chevrolet. For what P305F means, the ranked causes and the test order, see the P305F guide.

2014–2018 · Malibu
Supported by vehicle data
GM bulletins PI1412, PI1412A and PIE0463 cover P305F on the Malibu: check the auxiliary battery ground cables first, and treat smoke or a burning smell as a stop. Whether the bulletin is still current is not verified.
2014–2018 · Impala
Supported by vehicle data
GM bulletin PIE0463 asked for field reports of smoke or burning odor with P305F or P058D on the Impala. Whether the bulletin is still current is not verified.

PI1412Status unverified
P305F Dual Battery Control Module Performance
2014–2015malibu · NHTSA 10113540
Diagnostic tip for P305F.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
PI1412AStatus unverified
P305F diagnostic tip, unsecured ground wire
2014–2016malibu · NHTSA 10116909
Inspect for an unsecured ground wire at the auxiliary battery cables.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
PIE0463Status unverified
Smoke or burning odor with P305F or P058D
2014–2018malibu, impala · NHTSA 10137614
Engineering request for field reports; superseded by PIE0463A, which ends the request.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error