P1302 – OBD-II DTC

OBD-II DTC P1302 – Injector High Sides Shorted Together

DTC P1302 meaning

DTC P1302 refers to a diagnostic trouble code indicating that there is a short circuit condition in the high side of the fuel injector circuit. This code is specific to the fuel injection system and suggests that multiple fuel injectors are experiencing an electrical fault, potentially leading to improper engine performance or failure to start.

DTC P1302 symptoms

Common symptoms associated with DTC P1302 may include:

• Engine misfires
• Rough idling
• Decreased engine performance
• Increased fuel consumption
• Check Engine Light illuminated
• Difficulty starting the engine

DTC P1302 causes

Several factors can lead to the occurrence of DTC P1302, including:

• Short circuit in the fuel injector wiring
• Faulty fuel injectors
• Damaged engine control module (ECM)
• Corroded or loose electrical connections
• Faulty fuel injector driver circuit

DTC P1302 seriousness

DTC P1302 is considered a serious issue as it can lead to significant engine performance problems. If left unaddressed, it may result in:

• Severe engine damage
• Increased emissions
• Potential stalling or failure to start

It is advisable to diagnose and repair this code promptly to ensure the vehicle operates efficiently and safely.

How to diagnose DTC P1302

To diagnose DTC P1302, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the P1302 code.
2. Inspect the fuel injector wiring harness for any visible damage or corrosion.
3. Check the resistance of the fuel injectors to ensure they are within specifications.
4. Test the fuel injector driver circuit for proper voltage and ground.
5. Examine the engine control module for any signs of damage or malfunction.

How to fix DTC P1302 step-by-step instructions

To fix DTC P1302, follow these step-by-step instructions:

1. Disconnect the battery to ensure safety while working on the electrical system.
2. Inspect and repair any damaged wiring or connectors in the fuel injector circuit.
3. Replace any faulty fuel injectors identified during diagnosis.
4. Test and replace the fuel injector driver circuit if necessary.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Start the engine and monitor for any reoccurrence of the code.

How to erase DTC P1302

To erase DTC P1302, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the engine to ensure the code does not return.

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