Quick Diagnosis Guide
Meaning: Code P0302 indicates that the vehicle's onboard computer (ECU) has registered a fault in the powertrain (p) circuits.
Can I still drive? No. Get it diagnosed immediately to protect your catalytic converter.
What does the P0302 code mean?
Diagnostic Trouble Code (DTC) P0302 stands for Cylinder 2 Misfire Detected. This is a generic OBD-II trouble code indicating that the ECU has detected system performance parameters that fall outside normal calibrated tolerances.
When this code is logged, the ECU illuminates the dashboard check engine light and triggers a freeze frame record of engine sensor values to help diagnose the issue.
Common Symptoms of Code P0302
Depending on the vehicle make and driving conditions, you may observe the following symptoms:
- Engine shake at idle
- Loss of power
- Flashing MIL
What causes the P0302 fault code?
Root causes for a P0302 code typically include:
- Potential Cause 1: Failed spark plug or coil on Cylinder 2
- Potential Cause 2: Clogged fuel injector on Cylinder 2
- Potential Cause 3: Intake valve leakage on Cylinder 2
Repair Database Status
No verified vehicle-specific workshop fix is currently logged in our mobile mechanic database for this code. Refer to the diagnostic checklist below to isolate the fault.
Step-by-Step Diagnostic & Inspection Checklist
To inspect and troubleshoot a P0302 code, mechanics follow these validation steps:
- Step 1: Confirm code P0302 with OBDAssistant.
- Step 2: Check spark plug wire, plug, and coil pack for Cylinder 2.
Estimated Repair Cost Band
$60 - $200.
Note: Repair estimates vary based on vehicle make, model, local labor rates, and whether you require a full parts replacement.
Related Trouble Codes
If your scan tool registers other codes, check out these related guides:
Frequently Asked Questions
It is the second cylinder in the engine firing order, typically adjacent to cylinder 1.