Powertrain
generic / SAE
P2597
Turbocharger Speed Sensor B Circuit Intermittent
Turbo speed sensor B signal jumps or drops out — vibration, oil mist or chafed wiring at the second turbo.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number5 / 97
Possible causes
- Oil mist on the sensor tip high
- Connector with intermittent contact under vibration low
- Harness routed against vibrating component low
Symptoms
- Check engine light on
- Significant power loss / limp mode
- Possible blue or black smoke from exhaust
- Whistling or hissing sound from intake
Inspection / repair
- Difficulty: medium
- DIY: shop recommended
- Estimated cost: 200–1000 €
- Estimated time: 0.6–2.5 h
- Component: turbo speed sensor b
- Component: sensor wiring
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012