Description:

This diagnostic code signifies that the third sensor supply voltage in the ECU has exceeded its specified range, likely due to a short to a 12-volt source. This high voltage can damage sensitive electronic components and lead to inaccurate sensor readings or sensor failures.

Reaction:

The ECU may shut down affected sensors to prevent damage and maintain system stability, which could result in limited functionality and impaired monitoring capabilities.

Recommendations:

• Inspect Electrical Connections: Check the circuit for any potential connections to 12-volt sources that might cause the excessive voltage.
• Measure Voltage Output: Use a multimeter to verify that the voltage is indeed higher than the normal 5-volt supply.
• Identify and Repair Short Circuits: Locate and rectify any shorts causing the elevated voltage, possibly involving the replacement of wires or connectors.
• Reset ECU and Re-test System: After addressing the issue, reset the ECU to clear the fault and test the system to ensure all sensors are operating correctly within their voltage specifications.

Note:

It is critical to ensure that sensor supply voltages remain within their designated ranges to prevent hardware damage and ensure reliable operation.