P0289: Fuel injector 10 circuit reads high
Injector 10 circuit high
Severity: Severity not verified — if the car runs badly, have it inspected
The sources read define the code but do not rate its urgency. A failed injector can make the engine run rough, so have it checked.
P0289 in short
P0289 means the engine computer found an electrical fault in the circuit of fuel injector 10, reading high. TroubleCodes.net lists a wiring short to positive, the injector itself or the engine computer as the probable causes. Check the connector and wiring first.
The computer watches the circuit it uses to switch injector 10. When the signal reads high, it sets P0289.
TroubleCodes.net lists a wiring short to positive, the injector or the engine computer as probable causes.
Most likely causes
These are general causes for this code across vehicles. None is specific to one make or model.
Cause 1: Wiring short to positive or damaged connector
Possible — needs testing- Why it ranks here
- TroubleCodes.net lists wiring first, and it is the cheapest check.
- What would change this
- Rises if a harness fault is seen. Falls if it tests clean.
Cause 2: Faulty fuel injector 10
Possible — needs testing- Why it ranks here
- The injector is the part the circuit drives, but wiring is cleared first.
- What would change this
- Rises if wiring is good and the injector does not click or its resistance is off.
Cause 3: Engine computer injector driver
Possible — needs testing- Why it ranks here
- TroubleCodes.net lists the ECM last.
- What would change this
- Rises only after wiring and injector test good.
What to test first
Start at step 1. Each result tells you what it means and where to go next.
Step 1: With the engine off and cool, look over the injector connector and wiring for corrosion, looseness or damage.
IfDamaged wiring or a corroded connector is found
It meansRepair it and retest.
IfAll looks fine
It meansCheck the injector itself.
Step 2: Have a shop test the injector's electrical signal and resistance and its driver in the computer.
Warning:Injector circuits carry fuel under pressure and switched current; a shop should probe them.
IfWiring is good but the injector fails
It meansThe injector is the likely cause.
IfInjector and wiring test good
It meansThe computer's driver is suspect.
Symptoms
- Check engine light on
- Rough running or loss of power
How to fix
Step 1: With the engine off and cool, look over the injector connector and wiring for corrosion or damage.
Step 2: Ask a shop to test the injector circuit before replacing any parts.
On your vehicle
We don't have reviewed vehicle-specific evidence for P0289 yet. The causes and tests above apply across vehicles.
Related codes
Sources and review
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error