P0261
Cylinder 1 Injector A Circuit Low
P0261 is an OBD-II diagnostic trouble code meaning: Cylinder 1 Injector A Circuit Low. Common causes: injector wire short circuit to ground, broken injector power wire. Estimated repair cost: $33–222.
Symptoms
- Misfire in cylinder 1
- Vibration and rough engine operation
- Check Engine light comes on (flashes when misfired)
- Power reduction
- Smell of unburned fuel from the exhaust
Causes
- Injector wire short circuit to ground
- Broken injector power wire
- Internal short circuit of the injector winding
- ECU transistor switch malfunction
- Damage to the injector connector or wiring harness
How to Fix
- Read codes and check for misfire codes (P0301)
- Measure the injector resistance (the norm is 12–16 Ohms for a high-resistance one)
- Check the supply voltage at the injector connector
- Check the wiring harness for breaks and short circuits
- Try replacing the injector with a known working one.
- If the injector and wiring are excluded - ECU diagnostics
Related codes
Error P0261 by Vehicle Brand
FAQ
What does the P0261 code mean?
P0261 is an OBD-II diagnostic trouble code that indicates: Cylinder 1 Injector A Circuit Low
What causes a P0261 error code?
The most common causes of P0261 include: Injector wire short circuit to ground; Broken injector power wire; Internal short circuit of the injector winding; ECU transistor switch malfunction.
How do I fix a P0261 diagnostic trouble code?
To fix P0261: Read codes and check for misfire codes (P0301). Measure the injector resistance (the norm is 12–16 Ohms for a high-resistance one). Check the supply voltage at the injector connector. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0261?
Yes, but get it checked soon
How much does it cost to fix P0261?
The estimated repair cost for P0261 is $33–222. Actual cost depends on your vehicle, location, and labor rates.
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