Can you keep driving?
Can you keep driving?
Stop driving if any of these apply
- !The engine starts running very rough, stalls, or the check-engine light begins flashing.
- !You smell raw fuel or the injector fault is paired with a severe drivability change.
What to check first
Step-by-step checks
- 1
Safety first
Read the code with the engine off and avoid touching hot or moving components while you inspect the basics
- 2
Free - no tools
Confirm the engine's cylinder numbering before testing cylinder 13
- 3
Basic tool needed
Check whether the code is the only active fault or whether there are related misfire, fuel-trim, or injector codes stored with it
- 4
Basic tool needed
Look for loose connectors, damaged wiring, or anything recently disturbed around the affected injector circuit
- 5
Basic tool needed
Notice whether the symptom is constant, load-related, or only appears after warm-up
- 6
Basic tool needed
Avoid replacing parts until a basic inspection or related-code pattern gives you a stronger reason
If the code returns
- -If related codes are present, diagnose the broader fault pattern before replacing parts on this code alone.
- -If the code returns immediately after clearing, focus on an active fault rather than an old stored event.
- -If the system behaves normally but the code keeps returning, scan-data comparison becomes more useful than another visual check.
Background
What this code means
P0289 is a generic OBD-II code that points to cylinder 13 injector circuit high.
Treat it as a diagnosis starting point, not a guaranteed parts answer. The first job is to confirm whether the fault is active, secondary to another problem, or influenced by a vehicle-specific pattern.
Diagnosis
Common causes
Injector circuit wiring or connector issue
Loose connectors, damage, or corrosion can create the same code without the injector itself being dead.
Injector coil or internal injector fault
The injector may not respond normally to a control signal or may draw current outside the expected range.
Injector driver or control-side problem
The PCM or injector driver circuit may not be able to command the injector correctly.
Related misfire or mixture fault
A broader running problem can make the injector circuit look faulty when the root cause is elsewhere.
Avoid these mistakes
What not to do
- xDo not replace the injector first if the real problem is wiring, connector damage, or a control-side fault.
- xDo not keep driving if the engine starts misfiring badly, stalling, or running much rougher than before.
Parts
Parts that may need replacing
See also
Related OBD codes
P0200
P0200 usually means the injector circuit has a general malfunction.
P0300
P0300 usually means the engine is detecting random or multiple-cylinder misfires.
P0279
P0279 usually means cylinder 6 contribution or balance is lower than expected.
P0288
P0288 usually means cylinder 12 contribution or balance is lower than expected.
Source notes
Generic OBD-II (SAE J1979 / ISO 15031-5). P0270-P0289 were seeded from the dtcdb generic reference list and then expanded around injector circuit low/high faults, including wiring, connector, injector, and driver issues.
This guide is written as a generic multi-make reference, so bulletin history, sensor locations, and repair order can still change by manufacturer and engine family.
This is generic OBD-II guidance and should not override vehicle-specific service information. Exact diagnosis and repair steps vary by make, engine family, and model year.
Last reviewed: 2026-04-10
Reference: Open reference