Pinpoint Test C: Crankcase Ventilation Sensor
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Regeneration may occur during normal operation. During regeneration, diagnostic procedures may display biased values. If a regeneration occurs during diagnostic procedures, allow the process to complete before continuing diagnostics.
NOTE:
Refer to the appropriate Wiring Diagrams for schematic and connector information.
Normal Operation and Fault Conditions
Refer to the DTC Fault Trigger Conditions.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Condition |
|---|---|---|
| PCM P053A:00 | Positive Crankcase Ventilation Heater "A" Control Circuit /Open: No Sub Type Information | Sets when the PCM detects the actual crankcase ventilation heater control (CVHC) circuit voltage is less than the desired voltage. Make sure the crankcase ventilation heater connector is correctly connected. |
| PCM P053B:00 | Positive Crankcase Ventilation Heater "A" Control Circuit Low: No Sub Type Information | Sets when the PCM detects the state of the output driver signal for the crankcase ventilation heater control (CVHC) circuit moves outside the minimum or maximum limit for the commanded state. Make sure the crankcase ventilation heater connector is correctly connected. |
| PCM P053C:00 | Positive Crankcase Ventilation Heater "A" Control Circuit High: No Sub Type Information | Sets when the PCM detects the state of the output driver signal for the crankcase ventilation heater control (CVHC) circuit moves outside the minimum or maximum limit for the commanded state. Make sure the crankcase ventilation heater connector is correctly connected. |
Possible Sources
- Crankcase ventilation heater circuitry concern
- Crankcase ventilation heater
- PCM (12A650)