What does OBD2 code P0302 mean?
The engine control module (ECM) or powertrain control module (PCM) sets code P0302 when it registers that the Cylinder 2 Misfire Detected performance has fallen below the manufacturer's required baseline. This triggers your vehicle's malfunction indicator lamp (MIL), commonly known as the Check Engine Light.
Is It Safe to Drive with Code P0302?
No. Get it diagnosed immediately to protect your catalytic converter.
Symptoms of OBD2 Code P0302
Depending on your car model, symptoms for P0302 may vary. The most typical symptoms include:
- Engine shake at idle
- Loss of power
- Flashing MIL
What Causes Code P0302?
A variety of physical faults can trigger the P0302 code. Here are the most frequent culprits:
- Failed spark plug or coil on Cylinder 2
- Clogged fuel injector on Cylinder 2
- Intake valve leakage on Cylinder 2
Step-by-Step Diagnostic Routine
Before replacing any expensive components, run through these standardized troubleshooting steps:
- Confirm code P0302 with OBDAssistant.
- Check spark plug wire, plug, and coil pack for Cylinder 2.
Expected Repair Costs for P0302
$60 - $200.
Save on Diagnosis with OBDAssistant
Allows rapid code identification and misfire counter tracking.
Frequently Asked Questions
It is the second cylinder in the engine firing order, typically adjacent to cylinder 1.