Powertrain
generic / SAE
P2B99
Exhaust Pressure Control Valve A Driver Current/Temperature Too High
The output driver for the exhaust pressure control valve A reports current or junction temperature above its protection threshold. Stalled actuator or short-circuit fault.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / numberB / 99
Possible causes
- Valve actuator mechanically jammed high
- Control wire shorted to ground medium
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 400–2000 €
- Estimated time: 2–7 h
- Component: exhaust pressure control valve a
- Component: ecm
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012