Cylinder #7 Igniter Circuit Short
Code P1267 indicates a short circuit between the high and low sides of the ignition coil or igniter circuit for cylinder #7. This typically occurs when the insulation on the coil wiring breaks down, causing a direct short. The engine control module (ECM) detects an abnormal current draw and sets this code. This can lead to misfires, reduced power, and potential damage to the ECM or ignition components if not addressed.
1. Symptoms You Will Notice
- Check Engine Light on
- Engine misfire or rough idle
- Reduced power and poor fuel economy
2. Most Common Causes
- Internal short circuit in the fuel injector for cylinder #2
- Damaged or chafed wiring causing a short between the injector signal and power wires
- Injector electrical connector with bent, corroded, or directly contacting pins
- Moisture or water in the injector connector creating an electrical bridge
- Faulty PCM output driver (Powertrain Control Module)
3. Step-by-Step Diagnosis
Step 1: Scan for codes and verify P1267 is present.
Step 2: Inspect ignition coil and wiring for cylinder #7 for visible damage or shorts.
Step 3: Swap ignition coil with another cylinder and see if code moves.
Step 4: Test coil resistance and check for shorts to ground or power.
4. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with a short can cause further damage to the ignition system or ECM, and may lead to catalytic converter damage due to misfires.
How much does it cost to fix?▼
Typically $50-$150 for a DIY coil replacement. Labor at a shop may add $50-$100, total $100-$250.
5. Commonly Affected Makes
This is a manufacturer-specific code. The exact manufacturer is not confirmed in our current database.