What does OBD2 code P0305 mean?
The engine control module (ECM) or powertrain control module (PCM) sets code P0305 when it registers that the Cylinder 5 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 P0305?
No. Safe engine shutdown is recommended.
Symptoms of OBD2 Code P0305
Depending on your car model, symptoms for P0305 may vary. The most typical symptoms include:
- Rough engine sound
- Loss of torque
- Flashing MIL
What Causes Code P0305?
A variety of physical faults can trigger the P0305 code. Here are the most frequent culprits:
- Ignition coil or plug failure
- Low compression
- Bank 2 wiring fault
Step-by-Step Diagnostic Routine
Before replacing any expensive components, run through these standardized troubleshooting steps:
- Read trouble codes with OBDAssistant.
- Check spark plug on Cylinder 5.
Expected Repair Costs for P0305
$60 - $250.
Save on Diagnosis with OBDAssistant
Pinpoints Cylinder 5 misfires on multi-cylinder V6/V8 engines.
Frequently Asked Questions
Depends on the engine layout. In many V6 engines, Cylinder 5 is located on Bank 2.