Network
generic / SAE
U010C
Lost Communication With Turbocharger/Supercharger Control Module A
ECU has lost CAN communication with the turbocharger control module A. Boost control tracks commanded vs. actual manifold pressure; persistent deviation means wastegate, vanes, hose or actuator are not delivering the requested pressure.
SystemNetwork
Typegeneric / SAE
GroupU0
Range / number1 / 0C
Possible causes
- Module unpowered high
- Gateway module routing CAN messages incorrectly low
- CAN terminating resistor (120 Ω) drifted out of spec low
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: medium
- DIY: shop recommended
- Estimated cost: 80–1500 €
- Estimated time: 0.5–5 h
- Component: turbo module a
- Component: can bus
- MIL / check engine light
- emissions-relevant
- drive cycle required
- limp mode possible
Sources
References
sae:J2012