Description:

This diagnostic trouble code is generated when the PTA control software detects a plausibility problem at the internal transmission supply voltage inputs (VPS1). This indicates that the sensor circuit is open, shorted to a positive lead, or grounded.

Reaction:

Limited or no function of the transmission until the error is corrected, indicating a critical issue with the internal supply voltage.

Recommendations:

Inspect Internal Voltage Supply:

• Check the internal transmission voltage supply (VPS1) for any signs of irregularities.
• Ensure the voltage supply is stable and within the specified range.

Examine Sensor Circuit:

• Inspect the sensor circuit for any open connections, short circuits to positive leads, or grounding issues.
• Repair or replace any faulty wiring or components.

Test VPS1 Components:

• Verify the components associated with VPS1 are functioning correctly.
• Replace any defective components that may be causing voltage issues.

Ensure Proper Grounding:

• Confirm that all grounding connections are secure and free of corrosion.
• Correct any grounding issues to ensure reliable voltage supply.

Note:

Regular inspection and maintenance of the internal voltage supply and sensor circuits are essential to prevent faults and ensure the reliable operation of the transmission system.