p0749 pressure control solenoid intermittent
P0749 Pressure Control Solenoid Intermittent
Definition: The P0749 code indicates that there is an intermittent issue with the pressure control solenoid in the transmission. This solenoid is responsible for regulating the hydraulic pressure needed to operate various components within the transmission.
P0749 – Pressure Control Solenoid Intermittent
Typical Severity: Moderate
Common Causes
P0749 – Pressure Control Solenoid Intermittent
Common causes:
- Faulty pressure control solenoid
- Low transmission fluid level
- Dirty or contaminated transmission fluid
- Electrical issues such as damaged wiring or connectors
Common Misdiagnosis
OBD2 Code: P0749
Description: Pressure Control Solenoid Intermittent
Common Misdiagnosis: Faulty transmission fluid level or condition, failing transmission pump, or mechanical issues within the transmission are often misdiagnosed as a faulty pressure control solenoid. Additionally, wiring issues such as damaged connectors or corroded terminals can be overlooked.
Common Diagnostic Steps
OBD2 Code: P0749
Description: Pressure Control Solenoid Intermittent
- Check the transmission fluid level and condition. Ensure it is at the proper level and not contaminated.
- Inspect the wiring and connectors for damage or corrosion related to the pressure control solenoid circuit.
- Test the pressure control solenoid using a multimeter to ensure it has proper resistance and is functioning correctly.
- Use a scan tool to monitor transmission data for irregularities in pressure readings or solenoid operation.
- Perform a continuity test on the wiring harness between the PCM (Powertrain Control Module) and the transmission connector.
- If applicable, check for any TSBs (Technical Service Bulletins) related to this code for your specific vehicle model.
- If all tests pass, consider replacing the pressure control solenoid as it may be intermittently failing under load conditions.