P1203 – Land Rover DTC

Land Rover DTC P1203 – Injector 3 Open Circuit or Ground Short Fault

DTC P1203 meaning on Land Rover

DTC P1203 on a Land Rover indicates an issue with Injector 3, specifically an open circuit or ground short fault. This fault code is related to the fuel injector system of the vehicle.

Land Rover DTC P1203 symptoms

Symptoms of DTC P1203 on a Land Rover may include:

• Engine misfires
• Reduced engine performance
• Check Engine Light (CEL) illuminated on the dashboard

Land Rover DTC P1203 causes

The potential causes of DTC P1203 on a Land Rover include:

• Faulty fuel injector
• Open circuit in the wiring connected to Injector 3
• Ground short in the wiring connected to Injector 3

Land Rover DTC P1203 seriousness

DTC P1203 should be addressed promptly as it can lead to engine performance issues and potential damage if left unresolved. Ignoring this fault code may result in poor fuel economy and drivability issues.

How to diagnose DTC P1203 on Land Rover

To diagnose DTC P1203 on a Land Rover, follow these steps:

1. Use a diagnostic scanner to retrieve the fault code and confirm it is P1203.
2. Inspect the wiring harness connected to Injector 3 for any visible damage or loose connections.
3. Test the fuel injector for proper operation using a multimeter.
4. Check for any corrosion or contamination in the injector connector.

How to fix DTC P1203 on Land Rover

To fix DTC P1203 on a Land Rover, consider the following steps:

1. Replace the faulty fuel injector if it is determined to be the cause of the fault.
2. Repair any open circuits or ground shorts in the wiring connected to Injector 3.
3. Clean or replace the injector connector if necessary.
4. Clear the fault code and test drive the vehicle to ensure the issue has been resolved.

How to erase DTC P1203 on Land Rover

To erase DTC P1203 on a Land Rover, follow these steps:

1. Use a diagnostic scanner to clear the fault code from the vehicle’s ECU.
2. Ensure the underlying issue causing the fault code has been resolved before clearing it.
3. Perform a test drive to confirm the fault code does not reappear.

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