1239-0
UnclassifiedFuel
What This Code Means
No response or an erroneous response is detected by the processor over the SPI bus; Needed fuel flow exceeds a maximal expected fuel flow by more than a fuel flow dependent value (15700.00mm3/s at 4500.00mm3/s to 14000.00mm3/s at 14330.00mm3/s); Supply voltage does not drop below limit within 500.00ms after the request of 'Main Relay switch off'; Main relay switches off before the After-run has finished; ECU fails to store failures into memory; ECU fails to count driving cycles and perform corresponding reactions
Possible Causes
- •Communication failure between ECM processor and power stage controller over SPI bus
- •Leakage in the fuel rail pressure control system
- •Main relay is stuck in closed position
- •Main relay switches off prematurely before ECU finishes After-run actions
Related Winco Fault Codes
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