Ford Error Code P1400: How to Fix It

Q: Can I drive with Ford P1400 code?

You can drive short distances, but prolonged driving isn't recommended. P1400 can cause rough idle, poor fuel economy, and failed emissions tests. Address the issue promptly to prevent potential engine damage.

Q: How much does it cost to fix P1400 code?

DIY repairs typically cost $50-150 for a DPFE sensor or vacuum hoses. Professional repair ranges from $200-400 including diagnosis and parts. Cost varies by Ford model and local labor rates.

Q: What causes Ford P1400 error code?

Common causes include faulty DPFE sensor, damaged vacuum hoses, corroded electrical connections, clogged EGR passages, or a stuck EGR valve. Carbon buildup is often the root cause.

Q: Will P1400 cause my Ford to fail emissions testing?

Yes, P1400 will likely cause emissions test failure since it affects the EGR system that controls NOx emissions. The code must be resolved and the readiness monitors reset before testing.

Q: How do I test a DPFE sensor?

Test with a multimeter by checking reference voltage (should be 5V), signal voltage (0.5-4.5V with engine running), and ground continuity. A stuck reading or no voltage change indicates a faulty sensor.

Abstract

Ford error code P1400 indicates the DPFE (Differential Pressure Feedback EGR) sensor is receiving a low voltage signal from the EGR system circuit. This sensor monitors exhaust gas recirculation flow and sends feedback to your engine's computer to control emissions.