P1213 – Cylinder 1 Injector Circuit Short to Positive

Error Code P1213: Problems and Solutions

Meaning of Code P1213

Code P1213 is related to a fuel injector problem, specifically in cylinder 1.
The Engine Control Module (ECM) monitors the injection circuit operation and records this code if the values do not meet the manufacturer’s specifications.

Possible Symptoms

• Check engine light on (or “Service Engine Soon” light).
• Irregular idling or engine stalling.
• Decreased engine performance.
• Increased fuel consumption.
• Misfires or difficulty starting.

Possible Causes

• Faulty fuel injector.
• Open or short circuit in the injector wiring harness.
• Poor connection in the injector electrical circuit.

How to Fix Code P1213?

1. Visual Inspection
   • Check the fuel injector wiring harness and connectors.
   • Look for cut, burned, or poorly connected wires.
   • Ensure connector pins are not corroded, broken, or bent.
2. Fuel Injector Test
   • Disconnect the injector and use a multimeter (DVOM) to measure its resistance.
   • Compare the value with the manufacturer’s specifications.
   • If the injector is out of tolerance, replace it.
3. Power Signal Check
   • Using a LED tester or oscilloscope, verify that the ECM sends a pulse signal to the injector.
   • If there is no pulse, the problem may be with the ECM or the wiring.
4. Injector Cleaning or Replacement
   • If the injector is not faulty, try cleaning it with a specific product.
   • If the problem persists, replace the affected injector.
5. Code Clearing and Road Test
   • Use an OBDII scanner to clear the code and perform a road test.
   • Check if the code reappears.

If the problem persists despite these steps, a more in-depth diagnosis may be necessary to check the ECM or other components of the injection system.