Cylinder 6 Injector Circuit Low
The P0276 code indicates that the Engine Control Module (ECM) has detected a low voltage or resistance condition in the electrical circuit of the fuel injector for cylinder 6. This typically means the injector circuit is shorted to ground or has an open circuit, preventing proper fuel delivery to that cylinder. The ECM monitors the injector driver circuit and sets this code when the voltage is below the expected threshold during the injector activation.
01. Most Common Causes
- Faulty fuel injector on cylinder 6 (internal short or open)
- Open or shorted wiring in the injector circuit
- Corroded or damaged connector at the injector
- Failed ECM (rare)
02. Symptoms You Will Notice
- Engine misfire on cylinder 6
- Rough idle or hesitation
- Check Engine Light illuminated
- Decreased fuel economy and power
03. Step-by-Step Diagnosis
Step 1: Scan for codes and verify P0276 is present. Check for other related codes.
Step 2: Visually inspect the injector connector and wiring for damage, corrosion, or loose connections.
Step 3: Use a multimeter to measure resistance of cylinder 6 injector (typically 11-18 ohms). Compare to other injectors.
Step 4: Check for voltage at the injector connector with key on (should see battery voltage on one pin).
Step 5: Perform a continuity test between the injector connector and the ECM to check for open or short circuits.
Step 6: If all tests pass, suspect a faulty ECM or perform a injector balance test.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive for extended periods as it can cause misfire, catalytic converter damage, and reduced fuel economy. You may drive short distances to a repair shop.
How much does it cost to fix?▼
The cost typically ranges from $150 to $400, including parts and labor. A single injector replacement is around $100-$200, plus diagnostic time.