Network
generic / SAE
U02B0
Lost Communication With Turbocharger/Supercharger Boost Control B Position Sensor
The vehicle bus reports loss of communication with the boost control B position sensor. Closed-loop control of the wastegate/VTG actuator on this turbo loses its actual feedback signal.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number2 / B0
Possible causes
- Bus wiring open or shorted high
- Module without power or ground medium
- Module failed medium
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Inspection / repair
- Difficulty: hard
- DIY: shop recommended
- Estimated cost: 200–2000 €
- Estimated time: 1–4 h
- Component: boost control b position sensor
- Component: vehicle bus wiring
- MIL / check engine light
- emissions-relevant
- drive cycle required
- limp mode possible
Sources
References
sae:J2012