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Fuel SystemModerate✅ DIY Friendly

P0261

Cylinder 1 Injector Circuit Low

The fuel injector circuit for cylinder 1 is reading a lower resistance/voltage than expected.

SeverityModerate
CategoryFuel System
Est. Repair Cost$150-$400
Code TypePowertrain
DIY RepairYes

⚡ Common Causes

⚠️ Symptoms

✅ How to Fix — Step by Step

  • Step 1:Test injector resistance
  • Step 2:Inspect wiring and connector
  • Step 3:Swap injector with another cylinder to isolate fault
  • Step 4:Replace injector if faulty
💡 Pro Tip: Swapping the suspect injector with one from another cylinder is a quick way to confirm whether the injector or the wiring/ECM driver is at fault.

Repair Cost Estimate

Full Repair Estimate
$150-$400
DIY Possible?
YES
Severity
Moderate

Frequently Asked Questions

What does OBD2 code P0261 mean?+
P0261 stands for Cylinder 1 Injector Circuit Low. The fuel injector circuit for cylinder 1 is reading a lower resistance/voltage than expected.
What causes code P0261?+
Faulty injector; Damaged injector wiring; Corroded connector; Failed injector driver in ECM
How do I fix code P0261?+
Test injector resistance; Inspect wiring and connector; Swap injector with another cylinder to isolate fault; Replace injector if faulty
How much does it cost to fix P0261?+
Estimated repair cost for P0261 is $150-$400.
Is P0261 DIY-friendly?+
Yes — P0261 is generally DIY-friendly with basic tools.

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