Powertrain
generic / SAE
P04A3
Exhaust Pressure Control Valve B Intermittent
Same as P049F with intermittent or erratic feedback - typically a connector or harness fault.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / A3
Possible causes
- Intermittent contact at connector or terminal high
- Connector with intermittent contact under vibration low
- Harness routed against vibrating component low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 150–700 €
- Estimated time: 0.8–2.5 h
- Component: exhaust pressure valve b
- Component: exhaust pressure wiring b
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012