What does code P0307 mean?

P0307 — Misfire in cylinder 7. V8 engines only. Belongs to the powertrain.misfire system. Severity: warning.

What are the common causes of P0307?

Cylinder 7 spark plug (V8); Cylinder 7 ignition coil; Cylinder 7 injector; Cylinder 7 compression; Wiring/connector to cylinder 7

Can I drive with code P0307?

Limited: reaching the nearest workshop is fine, but avoid long trips. May progress into a more serious fault.

How do I diagnose P0307?

Read the code and freeze-frame with a scanner, check related-system errors, inspect the components listed (wiring, connectors, sensors). See the "How to diagnose" section above for the full step-by-step.

How do I clear code P0307?

The code can be cleared via an OBD-II scanner (e.g. ELM327 + the Car Diagnostics app): plug the adapter into the OBD port, go to Errors → Clear. If the underlying cause isn't fixed, the code will return within a few drive cycles.

OBD-II Code P0307 — Car Diagnostics Platform

What it means

Common causes

Cylinder 7 spark plug (V8)
Cylinder 7 ignition coil
Cylinder 7 injector
Cylinder 7 compression
Wiring/connector to cylinder 7
Intake manifold leak on Bank 2 (cylinders 5-8 typically)
Burnt valve or cracked head on Bank 2

How to diagnose

01
Read all stored and pending codes with an OBD-II adapter — get the full picture, not just the one code.
02
Capture freeze-frame data (RPM, coolant temperature, engine load) at the exact moment the code triggered.
03
Inspect the named subsystem with our app's AI explanation — get vehicle-specific causes for your make, model and year.

Decode P0307 on your actual car

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