P06F5

Glow Plug Control Module 2

Severity

🔴 High

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$22–333 (est.)

Symptoms

Check Engine light on
Difficulty cold starting the engine
White smoke on startup
Error codes for individual cylinders of the second group
Unstable engine operation when warming up

Causes

GPCM2 internal hardware fault
Loss of module power or ground
Lost communication between GPCM2 and ECU
Overheating or moisture penetration into the module
Damage to the module connector or wiring

How to Fix

Read all error codes, including the codes of the second group of spark plugs (P06E2, P06E3)
Check the GPCM2 supply voltage with the ignition on
Check GPCM2 grounding
Make sure there is communication between GPCM2 and the ECU
Inspect the connector and module housing for damage
If there is an internal fault, replace GPCM2

Related codes

P06F6 P06F7 P06F8 P06E5 P06DF