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P0115, P0116 , P0117

Read the instructions below then start the fault diagnostic procedure.

Symptom: Check Engine on. Poor performance.

P0115, P0116 , P0117


P0115 Coolant Temperature Sensor. Open Circuit / Short to B+

P0116 Coolant Temperature Sensor. Short to Ground

P0117 Engine Coolant Temperature. Insufficient Temperature Increase.


Fault symptom


• Check Engine on. Poor performance.


Conditions

The following conditions apply for the DTC in question:


• P0115: Voltage on control module sensor input exceeds 4.7 V for 0.6 seconds.

• P0116: Voltage on control module sensor input is below 0.3 V for 0.6 seconds.

• P0117: If the engine speed has exceeded 2000 rpm and the coolant temperature has not exceeded 0°C (32°F) after 3 minutes.


Diagnostic help

P0115: The control module uses -25°C (-13°F) as a substitute value for the glow duration control and 50°C (122°F) as a substitute value for the start of pressure build-up calculation. The reading on the diagnostic tool is -50°C (-58°F). If P0115, P0120 and P0195 are present in the control module then the lead to pin 93 is shorted to B+. The short can be located anywhere in the circuit.

P0116: The control module uses -25°C (-13°F) as a substitute value for the glow duration control and 50°C (122°F) as a substitute value for the start of pressure build-up calculation. The reading on the diagnostic tool is 200°C (392°F).

P0117: The control module uses 0°C (32°F) as a substitute value. The reading on the diagnostic tool is the same as the fuel temperature.