Powertrain
generic / SAE
P033A
Knock/Combustion Vibration Sensor D Circuit
A general electrical fault on knock sensor D — used on engines with multiple knock sensors (one per bank or per cylinder pair).
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number3 / 3A
Possible causes
- Sensor failed high
- Gateway module routing CAN messages incorrectly low
- CAN terminating resistor (120 Ω) drifted out of spec low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 50–400 €
- Estimated time: 0.5–2 h
- Component: knock sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012