VOLVOUU All Engines (2017 Emissions) Fault Code: P017638 PID: ACM Fuel Composition Sensor Circuit, Signal Frequency Incorrect
Conditions for diagnostic trouble code (DTC)
Abnormal sensor signal
Diagnostic operating conditions
Ignition key in ON position
Observable symptoms
Service regeneration failure
Probable cause
1) Open circuit on signal wire
2) Short circuit to high
3) Short circuit to ground
4) Connector
5) Wiring harness
6) Aftertreatment Control Module (ACM)
7) Fuel composition sensor
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