P0261
High SeverityCylinder 1 Injector Circuit Low
Fuel System
What Does P0261 Mean?
Low voltage in cylinder 1 injector driver circuit.
Common Fix
Replace cylinder 1 injector
Estimated Cost (DIY)
$40 - $150
Symptoms
- β οΈCylinder 1 misfire
- β οΈRough idle
- β οΈLoss of power
Common Causes
Short in injector wiringlikely
Failed injector coilpossible
ECM driver issueunlikely
How to Diagnose P0261
- 1Check injector connector
- 2Measure injector resistance
- 3Check wiring for shorts to ground
- 4Replace injector if coil shorted
Need to read or clear this code?
Shop OBD2 Scanners on Amazon βFrequently Asked Questions
- What is injector circuit low?
- It means the ECM sees low voltage/resistance in the injector circuit, often from a shorted injector coil.
- Can I test injector resistance?
- Yes β unplug the injector and measure with a multimeter. Compare to specs (typically 11-18 ohms).
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