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P0203 1999 Ford F150 Code - Injector Circuit Malfunction Cylinder 3

- Code Popularity: 2,062 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P0203 1999 Ford F150?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Fuel Injector #3
  • Fuel Injector 3 harness is open or shorted
  • Fuel Injector #3 circuit poor electrical connection
  • Faulty PCM
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How to Fix the DTC P0203 1999 Ford F150?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

The comprehensive component monitor (CCM) monitors the operation of the fuel injector drivers in the PCM. The test fails when the fuel injector does not operate electrically even though the harness assembly and fuel injectors test satisfactorily.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0203 1999 Ford F150 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

When is the Code Detected?

The P0203 is set if the Engine Control Module (ECM) is detects a low or high voltage drop or resistance at the injector 3.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • Lack/Loss of Power
  • The engine may be harder to start
  • Engine hesitation

Code P0203 1999 Ford F150 Description

Engine Control Module (ECM) checks the injectors circuit resistance and monitors the voltage drop during normal operation. The ECM will trigger the P0203 code when the resistance or voltage drop at the injector 3 is out of specifications.

OBDII Code P0203 1999 Ford F150 - Injector Circuit Malfunction Cylinder 3 - AutoCodes.com
P0203 1999 Ford F150 Code - Injector Circuit Malfunction Cylinder 3

Need More Information on the Code?

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