P0267 medium Severity

P0267: Cylinder 3 Injector Circuit Low

May cause rough idle, misfire on cylinder 3, reduced power and increased fuel consumption

Overview

P0267 indicates low voltage or resistance in the fuel injector control circuit for cylinder 3, often due to wiring, connector, injector, or PCM issues

Common Symptoms

  • Check engine light illuminated
  • Rough idle or engine misfire (especially cylinder 3)
  • Reduced engine power or hesitation
  • Increased fuel consumption

Most Common Causes

Faulty fuel injector (cylinder 3) high

Injector internal coil open or short can cause low circuit voltage

Damaged or corroded wiring or connector in injector circuit high

Poor connection often drops voltage below PCM threshold

Open or short in wiring harness for cylinder 3 injector medium

Wiring damage away from connector can interrupt proper signal

PCM/ECM driver transistor failure medium

Rare but possible if all other wiring and injector tests normal

Diagnostic Steps

  1. Confirm code with OBD‑II scanner and check for related misfire codes
    Expected: P0267 presence and possibly misfire codes for cylinder 3
    Interpretation: Ensures correct identification and context of failure
  2. Visually inspect cylinder 3 injector wiring and connectors
    Expected: No corrosion, broken wires, or loose connections
    Interpretation: Damaged or corroded wiring often causes low voltage readings
  3. Measure injector circuit resistance with multimeter
    Expected: Resistance within OEM specification
    Interpretation: Abnormal resistance indicates internal injector or wiring issue
  4. Check for proper voltage at injector with key ON
    Expected: Battery voltage present and PCM pulsing
    Interpretation: No voltage suggests wiring/relay issue; pulsing indicates injector driver activity
  5. If wiring and injector test normal, test PCM output signal
    Expected: Proper voltage waveform from PCM
    Interpretation: Abnormal PCM output implies module failure

Repair Solutions

Repair or replace damaged wiring/connectors in cylinder 3 injector circuit medium
Estimated Cost: $50 - $300

Wiring repair often resolves low voltage conditions

Replace faulty cylinder 3 fuel injector medium
Estimated Cost: $200 - $600

Injector replacement if internal failure is confirmed

Replace or reprogram PCM/ECM hard
Estimated Cost: $400 - $1200

Only after all other causes are ruled out

Common Misdiagnoses

Avoid these common diagnostic mistakes:

  • Assuming the fuel injector itself is bad without testing the wiring or PCM
  • Misattributing code to general fuel pressure or mechanical engine problem without electrical circuit verification

Frequently Asked Questions

What is the definition of the P0267 engine code?

The P0267 code stands for Cylinder 3 Injector Circuit Low. This generally indicates an issue with the Fuel System system.

How serious is the P0267 code?

With a severity level of medium, may cause rough idle, misfire on cylinder 3, reduced power and increased fuel consumption

How do I know if I have code P0267?

Common symptoms include: Check engine light illuminated, Rough idle or engine misfire (especially cylinder 3), Reduced engine power or hesitation. You might also notice the Check Engine Light is on.

What parts fail when P0267 is set?

Potential culprits include: Faulty fuel injector (cylinder 3), Damaged or corroded wiring or connector in injector circuit, Open or short in wiring harness for cylinder 3 injector. A proper diagnosis is recommended.

Repair cost breakdown for P0267

It depends on what needs to be fixed. Repair or replace damaged wiring/connectors in cylinder 3 injector circuit repairs are cheaper (~$300), while Replace or reprogram PCM/ECM repairs are on the higher end (~$1200).

Does P0267 affect Ford, Toyota, or Honda?

This is a universal code. You might see P0267 on Ford, Chevrolet, Toyota, Honda, Nissan, or any other OBD-II vehicle.

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