P1247 – OBD-II DTC

OBD-II DTC P1247 – Sensor Power Supply High Input

DTC P1247 meaning

DTC P1247 refers to a diagnostic trouble code indicating a high input signal from the sensor power supply. This code is typically associated with the engine control module (ECM) detecting an abnormal voltage level from a sensor that is supposed to operate within a specific range. The high input signal suggests that the voltage is exceeding the expected threshold, which can lead to incorrect readings and affect engine performance.

DTC P1247 symptoms

Common symptoms associated with DTC P1247 may include:

• Check Engine Light illuminated
• Decreased engine performance
• Increased fuel consumption
• Rough idling or stalling
• Unusual engine noises

DTC P1247 causes

Several factors can lead to the triggering of DTC P1247, including:

• Faulty sensor or wiring
• Short circuit in the sensor circuit
• Open circuit in the sensor circuit
• Faulty engine control module (ECM)
• Corroded or loose electrical connections

DTC P1247 seriousness

The seriousness of DTC P1247 can vary depending on the underlying issue. While it may not cause immediate catastrophic failure, it can lead to:

• Reduced engine efficiency
• Increased emissions
• Potential damage to engine components if left unaddressed

It is advisable to diagnose and resolve the issue promptly to maintain optimal vehicle performance.

How to diagnose DTC P1247

To diagnose DTC P1247, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the related wiring and connectors for damage or corrosion.
3. Check the sensor’s voltage output with a multimeter.
4. Test the ground connection for the sensor.
5. Replace the sensor if it is found to be faulty.
6. Clear the DTC and perform a test drive to see if the code reappears.

How to fix DTC P1247 step-by-step instructions

To fix DTC P1247, follow these step-by-step instructions:

1. Gather necessary tools: OBD-II scanner, multimeter, and basic hand tools.
2. Connect the OBD-II scanner to the vehicle’s diagnostic port and retrieve the DTC.
3. Visually inspect the wiring and connectors associated with the sensor for any signs of damage.
4. Use a multimeter to measure the voltage at the sensor connector. Compare it to the manufacturer’s specifications.
5. If the voltage is too high, check for short circuits or grounding issues in the wiring.
6. If the sensor is faulty, replace it with a new one.
7. Reconnect all connectors and wiring securely.
8. Clear the DTC using the OBD-II scanner.
9. Perform a test drive to ensure the issue is resolved and the DTC does not return.

How to erase DTC P1247

To erase DTC P1247, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn the ignition key to the “On” position without starting the engine.
3. Access the DTC menu on the scanner and locate DTC P1247.
4. Select the option to clear or erase the trouble codes.
5. Confirm the action and wait for the scanner to indicate that the codes have been cleared.
6. Disconnect the scanner and start the vehicle to ensure the check engine light is off.

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