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  1. 2008 Jeep Wrangler P0403 Code Help: Expert Troubleshooting Guide

    2008 Jeep Wrangler 3.8 P0403 Code After EGR Valve Replacement Wrangler 3.8 often faces persistent P0403 codes and EGR circuit wiring faults after valve replacement. The P0403 code indicates an …

  2. Ford Explorer 2010 P0403 and P0443 Faults Explained - JustAnswer

    P0403 indicates an EGR circuit malfunction, while P0443 relates to the EVAP purge control valve circuit. Check wiring harnesses for damage or corrosion near the EGR valve and purge valve. Test …

  3. 2010 Explorer P0403 & P0443 Codes: Expert Troubleshooting Guide

    2010 Explorer 6-Cyl: Diagnosing P0403 and P0443 Codes Explorer often faces EGR valve communication errors and EVAP system sensor faults causing check engine lights. Codes P0403 …

  4. Ford Mustang P0403 P0406 P0122 Codes After EGR Repair - JustAnswer

    The P0403 code indicates an EGR circuit malfunction, often due to faulty EGR valve or solenoid. Leaving the TPS (Throttle Position Sensor) unplugged can trigger P0122 (low TPS voltage), P2110 …

  5. P0403-P0405 - Ford Powerstroke Diesel Forum

    Feb 18, 2011 · 2007 ford f250 diesel showing codes p0403 and p0405 here is this located on my truck i can't find it. (i'm a country girl trying tget her truck statrted thanks for the help

  6. Ford F150 P0403 EGR Control Circuit Malfunction Diagnosis

    The P0403 code indicates an EGR control circuit fault, often due to wiring shorts or connector issues. Test voltage at the EGR valve connector; a proper signal varies with duty cycle commands. Inspect …

  7. Ford Explorer 2010: Q&A on P0403 & P0443 Codes - JustAnswer

    2010 Ford Explorer P0403 & P0443 Codes: Causes and Fixes Explorer often faces persistent EGR and EVAP system codes despite valve replacements. Codes P0403 and P0443 indicate electrical circuit …

  8. Ford Explorer Q&A: P0135, P0155, P0141, P0403 & More - JustAnswer

    Ford Explorer 2010 4.0L: Diagnosing Multiple O2 and P0403 Codes Explorer 4.0L often faces oxygen sensor failures and EGR system malfunctions causing check engine lights. Codes P0135, P0141, …

  9. Fixing 2010 Mustang: Solving P0443, P0403 & More - Q&A Guide

    Multiple codes like P0443, P0403, and O2 sensor faults indicate issues with the EVAP purge solenoid, EGR system, and oxygen sensors. Despite part replacements, rough idle may stem from wiring …

  10. Ford Explorer 2010 P0403 P0443 P0193 Codes and Idle Fault

    2010 Ford Explorer 4.0 p0403 p0443 and p0193 Typically, the P0403 and P0443 faults suggest a malfunctioning powertrain control module (PCM) or a blown fuse for this module. The fuse can be …