Mitsubishi P0021 Error Code: How to Fix It

Q: Can I drive my Mitsubishi with P0021 error code?

You can drive short distances, but avoid extended driving. The P0021 code can cause reduced fuel economy, rough idling, and potential engine damage if left unaddressed. Get it diagnosed and repaired as soon as possible.

Q: How much does it cost to fix P0021 on a Mitsubishi?

Repair costs vary depending on the root cause. VVT solenoid replacement typically costs $150-300, camshaft position sensor replacement costs $100-200, while timing chain replacement can cost $800-1500 including labor.

Q: What causes P0021 error code in Mitsubishi vehicles?

Common causes include dirty or low engine oil, faulty VVT solenoid, bad camshaft position sensor, stretched timing chain, clogged oil passages, or wiring issues. Oil-related problems are the most frequent cause.

Q: Will P0021 cause my Mitsubishi to fail emissions testing?

Yes, P0021 will likely cause your vehicle to fail emissions testing. The error code indicates a timing issue that affects engine performance and emissions output. The code must be resolved and the system must complete all readiness monitors before passing inspection.

Q: How do I prevent P0021 error code from returning?

Maintain regular oil changes with proper grade oil, replace oil filter regularly, use quality fuel, and address any oil leaks promptly. Follow manufacturer maintenance schedules and avoid extended oil change intervals.

Abstract

The P0021 error code in your Mitsubishi indicates that the intake camshaft position on Bank 2 is more advanced than the ECM expected. This timing issue can cause rough idling, reduced engine performance, and increased fuel consumption. The problem is typically related to the variable valve timing (VVT) system, oil flow issues, or camshaft position sensor problems.