P0289 – OBD-II DTC

OBD-II DTC P0289 – Cylinder 10 Injector Circuit Low

DTC P0289 meaning

DTC P0289 refers to a diagnostic trouble code indicating a low voltage condition in the injector circuit for cylinder 10. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors the performance of the engine and its components. When the Engine Control Module (ECM) detects that the voltage in the injector circuit for cylinder 10 is below the expected range, it triggers this code.

DTC P0289 symptoms

Common symptoms associated with DTC P0289 may include:

• Engine misfires
• Rough idling
• Decreased engine performance
• Increased fuel consumption
• Check Engine Light (CEL) illuminated

DTC P0289 causes

Several factors can lead to the triggering of DTC P0289, including:

• Faulty fuel injector for cylinder 10
• Wiring issues or damaged connectors in the injector circuit
• Faulty Engine Control Module (ECM)
• Low fuel pressure
• Short circuit or open circuit in the injector circuit

DTC P0289 seriousness

DTC P0289 can be serious as it indicates a problem with the fuel delivery to cylinder 10. If left unaddressed, it may lead to:

• Increased emissions
• Potential engine damage due to misfires
• Reduced fuel efficiency
• Overall engine performance issues

How to diagnose DTC P0289

To diagnose DTC P0289, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the code.
2. Inspect the wiring and connectors for cylinder 10’s injector for any visible damage.
3. Check the resistance of the injector to ensure it is within specifications.
4. Test the voltage supply to the injector while the engine is running.
5. Examine the ECM for any faults or updates that may be necessary.

How to fix DTC P0289 step-by-step instructions

To fix DTC P0289, follow these steps:

1. Inspect and repair any damaged wiring or connectors in the injector circuit.
2. Replace the faulty fuel injector for cylinder 10 if it is not functioning correctly.
3. Ensure that the fuel pressure is within the manufacturer’s specifications.
4. Reprogram or replace the ECM if it is determined to be faulty.
5. Clear the DTC using an OBD-II scanner and test drive the vehicle to ensure the issue is resolved.

How to erase DTC P0289

To erase DTC P0289, 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 verify that the code does not reappear.

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