Powertrain
generic / SAE
P0479
Exhaust Pressure Control Valve A Intermittent
Exhaust pressure control valve A drive signal is unstable.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number4 / 79
Possible causes
- Intermittent connector high
- Connector with intermittent contact under vibration low
- Harness routed against vibrating component low
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 80–700 €
- Estimated time: 0.5–2.5 h
- Component: exhaust pressure regulator
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012