Mazda Trouble Codes and Known Issues

Mazda combines MZR gasoline engines (up to 2012) and Skyactiv engines (from 2012), with variable camshaft timing. The Mazda3 and CX-5 are among the most searched models; in general these are reliable engines, and their codes come from the EVAP system, variable valve timing and the catalytic converter.

Most searched models: Mazda2, Mazda3, Mazda6, CX-3, CX-30, CX-5 and BT-50.

Common problems on Mazda vehicles

• Variable valve timing oil control valve on the MZR 2.0 and 2.3.
• Canister purge solenoid on the Mazda3 and Mazda6.
• Oxygen and air-fuel ratio sensors.

Tips for diagnosing a Mazda

• Skyactiv engines run high compression and are sensitive to fuel and oil quality.
• The diesel BT-50 shares many common failures with the Ford Ranger of the same generation.

Do you have several codes at once? Use the free multi-code diagnosis for Mazda: it sorts the codes by priority and shows these make-specific notes. Below are the codes with documented quirks on Mazda vehicles.

Make notes are a guide based on well-known common failures. Always confirm with the manufacturer's documentation for your engine and model year.