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DTC P1121 Coolant Flow Control Valve Position Sensor Circuit Stuck: Description
Refer to DTC P1120
.
DTC TROUBLE DETECTION CONDITION CHART
| DTC No. |
DTC Detection Condition |
Trouble Area |
| P1121 |
- Water valve position sensor output voltage:
No change despite the ECM sending a valve control signal or slow response
- CHS tank outlet temperature sensor output:
60°C (140°F) or more (when hot coolant recovering starts)
- CHS tank outlet temperature sensor output:
No change although the hot coolant is recovered
|
- Water valve
- Cooling system (clogging)
- ECM
|