Powertrain
generic / SAE
P0334
Knock/Combustion Vibration Sensor B Circuit Intermittent
Knock sensor B signal jumps or drops out intermittently — usually a corroded connector or chafed wire near the cylinder head.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number3 / 34
Possible causes
- Intermittent connector 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: 40–400 €
- Estimated time: 0.5–2 h
- Component: knock sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012