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Code P0289

Symptoms

• Engine misfire

• Poor fuel economy

• Check Engine Light illuminated

Common Causes

• Faulty fuel injector

• Short circuit in the injector wiring

• Faulty ECM

Glossary

ECM: Engine Control Module

Injector: A device that sprays fuel into the engine

Related Codes

• P0288

• P0290

Official description

Cylinder 10 Injector A Circuit High

Laymans terms

This code means that the part of the car that sprays fuel into the engine for cylinder number 10 is getting too much electricity.

Explanation

The Engine Control Module (ECM) has detected a high voltage condition in the injector circuit for cylinder 10, which could indicate a problem with the injector or its wiring.

Technical description

OBD-II code P0289 is triggered when the ECM detects a voltage that is higher than expected in the injector circuit for cylinder 10. This could be due to a short to voltage, a faulty injector, or issues with the wiring or connectors associated with the injector circuit.

Diagnosis steps

• Use an OBD-II scanner to confirm the code.

• Inspect the wiring and connectors for cylinder 10's injector.

• Test the injector's resistance and voltage.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the faulty fuel injector.

• Reprogram or replace the ECM if necessary.

Tools required

• OBD-II scanner

• Digital multimeter

• Basic hand tools

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-250

• Chevrolet Silverado

• Dodge Ram 3500

Preventive measures

• Regular maintenance and inspection of fuel system components.

• Use high-quality fuel to prevent injector clogging.

• Keep electrical connections clean and secure.

Error code type

Engine Performance

User experience recommendations

• Do not ignore the Check Engine Light.

• Have a professional diagnose the issue if unsure.

• Regularly maintain your vehicle to prevent such issues.

Warranty information

Check with your vehicle manufacturer for warranty coverage on fuel injectors and related components.

Historical data

This code is relatively common in vehicles with high mileage or those that have not had regular maintenance.

Urgency level

Moderate – While the vehicle may still operate, performance and fuel efficiency will be affected.

Legal and safety notice

Driving with a malfunctioning injector can lead to increased emissions and potential engine damage.

Testing conditions

• Engine running

• System voltage within normal range

Component location

The fuel injector for cylinder 10 is located on the engine block, typically near the intake manifold.

FAQs

Q: Can I drive my car with code P0289?
A: While you can drive the car, it's not recommended as it may lead to further engine damage.

Q: How serious is code P0289?
A: It is moderately serious as it affects engine performance and fuel efficiency.

Last updated: Mar 2, 2026 • Source: internal database
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