P1125 , P1126
Read the instructions below then
start the fault diagnostic procedure.
Symptom: Check Engine on. Poor performance.
P1125
Boost Pressure Control Valve Circuit. Open / Short to Ground.
P1126
Boost Pressure Control Valve Circuit. Short to B+.
Fault symptom
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Check Engine on. Poor performance.
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Conditions
The following conditions apply for the DTC in question:
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P1125:
The boost pressure control valve circuit is shorting to ground/open circuit.
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P1126:
The boost pressure control valve circuit is shorting to B+.
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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.
