P1662
Read the instructions below then
start the fault diagnostic procedure.
Symptom: CHECK ENGINE comes on after two driving cycles.
Torque too low or fuel shut-off on acceleration.
Charge Air Control Valve Circuit. Open / Short to Ground.
Fault symptoms
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CHECK ENGINE comes on after two driving cycles.
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Torque too low or fuel shut-off on acceleration.
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Conditions
The following conditions apply for this DTC:
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Engine running and main relay voltage exceeds 10 V.
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Output voltage is below 2 V when the output is inactive.
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Conditions are met for 10 periods which must occur within 60 seconds (diagnostic trouble code normally set after 0.3 seconds, but may sometimes take much longer).
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Diagnostic help
Fault diagnosis concerns electrical faults in connecting cables or in the valve.
Diagnostic tool functions related to this fault are:
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Activating the valve output.
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See also the description of activating functions under ”Fault diagnosis, general” for more information.
Check the wiring
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Note
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Jiggle the leads and in-line connectors at various points and in different directions to detect any intermittent breaks or short circuits in the wiring. Observe the multimeter, test lamp or diagnostic tool while doing this.
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