P0116

P0116 00

Cooling system malfunction







Fault symptom
- CHECK ENGINE.
- Incorrect temperature gauge reading.

On-board diagnosis

Type of diagnosis:
- Once per driving cycle.

Enable criteria:
- Battery voltage must be between 11 - 16 V.
- None of the following DTCs must be detected: P0115, P0117, P0118 and P0119.
- Engine running.
- Atmospheric pressure higher than 725 kPa (105 psi).
- Intake air temperature must exceed -6 degree C (21 degree F).
- Coolant temperature higher than -6 degree C (21 degree F).
- Coolant temperature lower than 65 degree C (149 degree F).
- If vehicle speed exceeds 140 km/h (87 mph), diagnostics will be cancelled and not restart until next driving cycle.

Fault criteria:
- When the difference between the calculated engine temperature and the average temperature sensor value is outside the interval -7 degree C and 30 degree C. The average value is calculated after 200 s.

Dependent:
P0112, P0113
P0115, P0119
P0117, P0118

System reaction to a fault:
- None

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

Diagnostic help

Diagnosis regards:
- Fault in the cooling system (coolant level/thermostat).
- During a cold start, the warming of the engine is calculated according to load and engine speed. The measured value is compared with the calculated value. If the variation is too large, the cooling system is deemed to have a reduced function.

Functions in the diagnostic tool related to the fault:

Test value:
- Engine Temperature
(See also description of readings/activations in diagnostic tool)