P1386
Symptom: Engine performance may be down due to continuous retardation of the
ignition timing.
Control module, knock sensor circuitry
Fault symptoms
Engine performance may be down due to continuous retardation of the
ignition timing.
Conditions
Fault in the control module's internal electronic circuits for signal conditioning of
the knock sensor signal.
Diagnostic procedure
1. Final check
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Clear the diagnostic trouble
code.
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Implementation of driving cycle:
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Evaluation of driving cycle:
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Has the diagnostic trouble code recurred?
Continue as described in
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No steps to be taken.
