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P1125 , P1126

Read the instructions below then start the fault diagnostic procedure.

Symptom: Check Engine on. Poor performance.

P1125 , P1126


P1125 Boost Pressure Control Valve Circuit. Open / Short to Ground.

P1126 Boost Pressure Control Valve Circuit. Short to B+.


Fault symptom


Check Engine on. Poor performance.


Conditions

The following conditions apply for the DTC in question:


P1125: The boost pressure control valve circuit is shorting to ground/open circuit.

P1126: The boost pressure control valve circuit is shorting to B+.


Diagnostic help

The DTC indicates an electrical malfunction in the charge air circuit. A mechanical fault will generate DTC P1127 or P1128. The EGR function will be turned off. When a fault occurs that generates P1625, then DTCs can also be generated for components that are supplied with current from the main relay. If there are more DTCs in the system, start fault diagnosis with P1625.