Description:

This code indicates that the voltage in the ECU’s 5-volt supply circuit for sensors is higher than expected, likely due to a short to 12 volts. Excessive voltage can damage sensitive sensor electronics, leading to erroneous data or sensor failure.

Reaction:

The ECU may deactivate certain sensors to prevent damage or incorrect operation, which could result in degraded system performance or diagnostic errors.

Recommendations:

• Inspect 5-Volt Supply Circuit: Check the circuit for any potential shorts to higher voltage sources or damaged regulators.
• Test Voltage Output: Measure the voltage output to confirm if it exceeds the 5-volt specification.
• Rectify Electrical Issues: Repair any faults found within the supply circuit, including replacing voltage regulators or wiring as necessary.
• Reset ECU and Re-test System: After repairs, reset the ECU to ensure all system sensors are functioning correctly with the correct supply voltage.

Note:

Maintaining the correct voltage supply to ECU sensors is crucial for accurate monitoring and control functions within the vehicle. Regular electrical system checks can prevent over-voltage conditions and protect sensor integrity.