P1671
Read the instructions below then
start the fault diagnostic procedure.
Symptom: CHECK ENGINE.
Limp-home relay, short to B+
Fault symptoms
On-Board Diagnostics
Type of diagnosis:
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Continuous. But interrupted when fault criteria fulfilled and will not restart until next driving cycle.
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Enable criteria:
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Engine running. Main relay voltage exceeding 10V. Output is active.
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Fault criteria:
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Output voltage exceeding 2V for more than 1 s.
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Dependents:
System reaction to a fault:
OK report:
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Enable criteria fulfilled and fault criteria not fulfilled within 60 s.
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Fault handling:
(See section
Fault handling III, other emission-related components and functions
for more information.)
Diagnostic help
Fault diagnosis concerns electrical fault in connecting leads or in the relay.
Checking the wiring
Jiggle the wiring harness at several points and in different directions to detect intermittent breaks and short circuits. Observe the multimeter, diagnostic tool or test lamp during the check.