Injector Circuit Malfunction - Cylinder 6
The P0206 code indicates a malfunction in the electrical circuit of the fuel injector for cylinder 6. This means the powertrain control module (PCM) has detected an abnormal voltage or resistance in the injector circuit, which can prevent the injector from opening properly. Common causes include a faulty injector, wiring issues, or a damaged PCM. This condition can lead to misfires, reduced power, and increased emissions.
01. Most Common Causes
- Faulty fuel injector on cylinder 6
- Open or shorted wiring in the injector circuit
- Poor electrical connection at the injector or PCM
- Failed PCM (rare)
02. Symptoms You Will Notice
- Engine misfire on cylinder 6
- Rough idle or hesitation during acceleration
- Check Engine Light illuminated
- Decreased fuel economy and power
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Visually inspect the injector connector and wiring for damage or corrosion.
Step 3: Use a multimeter to test injector resistance (should be 11-18 ohms).
Step 4: Swap injector with another cylinder to see if the code moves.
Step 5: Check for voltage at the injector connector with key on (should be battery voltage).
Step 6: Test the injector driver circuit using a noid light or oscilloscope.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as the misfire can damage the catalytic converter and cause poor performance. Short trips to a repair shop are acceptable.
How much does it cost to fix?▼
The cost typically ranges from $50 to $150 for diagnosis and repair, but replacing an injector can cost $200-$400 including parts and labor.