Nissan Error Code P1402: How to Fix It

Q: What causes Nissan P1402 error code?

P1402 is typically caused by a stuck or clogged EGR valve, blocked EGR passages, faulty vacuum lines, or a malfunctioning EGR position sensor. Carbon buildup is the most common culprit.

Q: Can I drive with P1402 error code?

You can drive short distances with P1402, but it should be fixed promptly. The error can cause poor fuel economy, rough idling, and increased emissions. Prolonged driving may lead to more serious engine problems.

Q: How much does it cost to fix P1402?

DIY cleaning costs $10-30 for cleaning supplies. Professional diagnosis costs $100-150. EGR valve replacement ranges from $200-600 depending on the part cost and labor rates in your area.

Q: Will P1402 cause my Nissan to fail emissions testing?

Yes, P1402 will likely cause your vehicle to fail emissions testing since it indicates the EGR system isn't functioning properly. The code must be resolved and the system must pass readiness tests before emissions compliance.

Q: How often should EGR valve be cleaned?

EGR valves should be inspected every 50,000 miles and cleaned as needed. Vehicles with high mileage or those driven in stop-and-go traffic may need more frequent cleaning due to increased carbon buildup.

Abstract

Nissan error code P1402 indicates an EGR (Exhaust Gas Recirculation) system flow malfunction. This means the EGR valve isn't allowing the proper amount of exhaust gas to flow back into the intake manifold, which can affect engine performance and emissions.