Volvo Land Rover Error Code P1421: How to Fix It

Q: What does error code P1421 mean?

P1421 stands for Secondary Air Injection System Pump Electrical Short to Ground. It means the engine control module has detected a short to ground in the pump's electrical circuit.

Q: Can I drive with code P1421?

Yes, you can usually drive short distances, but the check engine light will be on. It may cause increased emissions and slightly reduced performance. It's best to fix it promptly to avoid further issues.

Q: How do I clear the P1421 code?

You can clear the code with an OBD2 scanner after repairing the issue. Simply erasing the code without fixing the problem will cause it to come back.

Q: Is P1421 the same for Volvo and Land Rover?

Yes, P1421 is a generic OBD2 code that applies to both Volvo and Land Rover vehicles. The diagnostic steps are similar.

Q: How much does it cost to fix P1421?

DIY cost can be under $50 for wiring repairs or up to $200-400 for a new secondary air pump. Professional repair may cost $300-600 including labor.

Abstract

Error code P1421 indicates a short to ground in the secondary air injection (AIR) system pump electrical circuit. This is a low-severity issue that can cause decreased engine performance and increased emissions. The fix typically involves inspecting the pump wiring and connector for damage.