| 1 |
Fault code |
P0115 |
| 2 |
Fault storage |
after the end of the test period and faults |
| |
Activation of malfunction indicator lamp for engine diagnosis (EURO3/4) or CHECK ENGINE (MIL)  |
after two successive driving cycles with faults |
| 3 |
Frequency of the test |
continuous |
| 4 |
Checked signal or status |
Limits for coolant temperature/plausibility |
| 5 |
Fault setting conditions |
|
| |
Lower limit |
Fault, if the resistance is greater than approx. 80 kΩ (approx. -39 °C) |
| |
Upper limit |
Fault, if the resistance is less than approx. 45 Ω (approx. +170 °C) |
| |
Plausibility |
The increase in temperature after a cold start is compared to a stored temperature model (characteristic). Depending on the start temperature and the engine speed, at least +15 °C must be reached after approx. 120 - 1200 s. |
| 6 |
 |
In the event of a fault, driving continues at a substitute value from the temperature model. If the signal becomes plausible again, the system changes over to the signal from the coolant temperature sensor. |