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ME9 / P0117 00

Read the instructions below then start the fault diagnostic procedure.

Symptom: Malfunction Indicator Lamp

  P0117 00


Engine Coolant Temperature Sensor Circuit. Short to B+ / Open circuit.

Fault symptom

Malfunction Indicator Lamp

On-board diagnosis

Type of diagnosis:

Continuous

Enable criteria:

Engine running longer than 60 s.

Fault criteria:

When the signal on the control module input corresponds to a temperature greater than 138°C for more than 3 seconds.

OK report:

Fault criteria NOT fulfilled for 3 s.

Fault handling:

Type III
(See section Fault handling III, "Other emission-related components and functions" for more information.)

Checking the wiring harness

Move the wiring harness at several spots and in several directions to reveal intermittent breaks and short-circuits. Check switches, connectors and crimp connections for oxidation, retracted pins and pin clamping force.

Diagnostic help

Diagnosis regards:

Electrical fault in connecting leads or component.

Functions in the diagnostic tool related to the fault:

Engine Temperature

(See also description of readings/activations in diagnostic tool)