Description:

This diagnostic trouble code is generated when the PTA control software cannot determine the transmission oil pressure (system pressure). The transmission oil pressure switch opens when the transmission input speed exceeds 900 rpm, indicating low oil pressure.

Reaction:

The warning remains active until the error is corrected, signaling a continuous issue with the transmission oil pressure.

Recommendations:

Check Oil Pressure:

• Verify the transmission oil pressure using a mechanical gauge.
• Ensure the oil pressure is within the manufacturer’s specifications.

Inspect Oil Pressure Switch:

• Check the oil pressure switch for proper operation.
• Replace the switch if it is defective.

Examine Oil Levels and Condition:

• Ensure the transmission oil is at the correct level.
• Check the oil for contamination or degradation and replace it if necessary.

Inspect Transmission Input Speed:

• Confirm that the transmission input speed sensor is working correctly.
• Replace the sensor if it is found to be faulty.

Note:

Maintaining the correct oil pressure is crucial for the proper functioning of the transmission. Regularly check and maintain oil levels and quality to avoid low-pressure issues.