Chrysler Error Code P1403: How to Fix It

Q: Can I drive my Chrysler with error code P1403?

You can drive short distances, but P1403 can cause rough idling, poor fuel economy, and increased emissions. Get it diagnosed and repaired promptly to prevent potential damage to other engine components.

Q: How much does it cost to fix Chrysler P1403 error code?

Repair costs range from $100-300 if it's just a wiring issue or sensor replacement, up to $500-800 if the EGR valve assembly needs replacement. Diagnostic fees typically add $100-150.

Q: What causes loss of 5V to the EGR sensor in Chrysler vehicles?

Common causes include corroded wiring connections, damaged wiring harness, failed EGR position sensor, or rarely, a problem with the powertrain control module (PCM) that supplies the 5V reference voltage.

Q: Will P1403 cause my Chrysler to fail emissions testing?

Yes, P1403 will likely cause your vehicle to fail emissions testing since it affects the EGR system's ability to reduce NOx emissions. The code must be resolved and the readiness monitors completed before testing.

Q: How do I reset error code P1403 on my Chrysler?

Use an OBD2 scanner to clear the code, or disconnect the battery for 15 minutes. However, the code will return if the underlying problem isn't fixed. The issue must be properly diagnosed and repaired.

Abstract

Chrysler error code P1403 indicates a loss of 5-volt power supply to the EGR (Exhaust Gas Recirculation) sensor. This electrical issue can cause rough idling, poor acceleration, and increased emissions as the engine computer cannot properly monitor exhaust gas flow.