P3081

P3081

Diagnosis information - Control unit DME (DFI)

Coolant temperature Engine implausible

Diagnostic conditions
- Intake air temperature at Engine start < 70 °C (°F) or Coolant temperature at Engine start < 70 °C (°F) (See [Information] 1)
- Engine running > 3 Minute(s) (without Overrun phase(s))
- none of the following faults stored: Coolant temperature sensor or Intake air temperature sensor

Possible fault causes
- Seal in the Thermostat housing Faulty
- Thermostat housing Faulty
- Thermostat Faulty
- Air in the Cooling system

Fault setting condition(s)
- Coolant temperature Engine < 70 °C (158 °F), at:
- Diagnosis end (See [Information] 2)

Fault effects
- Engine temperature = temperature model (as substitute value for Coolant temperature Engine)
- The fault can be healed only if the thermostat has been tested and found to be OK.

INFORMATION
1. Diagnosis starts under the following conditions:
- if the system was free of faults before
- Coolant temperature Engine at Engine start < 70 °C (°F)

- if fault has been previously detected in the system
- Intake air temperature at Engine start < 70 °C (°F) (Substitute value Engine temperature only for Engine start)

2. Diagnostics is ended,
- to > 3 Minute(s) Engine running (calculated without Overrun phase(s)),
and if:
- the calculated temperature model reaches 70 °C (158 °F) before the measured coolant temperature has reached 70 °C (158 °F) (fault entry),
or
- the measured coolant temperature reaches 70 °C (158 °F) before the calculated temperature model has reached 70 °C (158 °F) (NO fault entry).