Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2014MUSTANG GT, 2D COUPE, AUTOMATIC TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - POWERTRAIN DTC CHARTS & DESCRIPTIONS (EXCEPT DIESEL & HYBRID)DTC DIAGNOSISP0405 - EXHAUST GAS RECIRCULATION (EGR) SENSOR A CIRCUIT LOW
2014 Ford Mustang GT, 2D Coupe, Automatic Trans
P0405 - Exhaust Gas RECIRCULATION (EGR) Sensor A Circuit Low
2014 Ford Mustang GT, 2D Coupe, Automatic TransSECTION P0405 - Exhaust Gas RECIRCULATION (EGR) Sensor A Circuit Low
P0405 - EXHAUST GAS RECIRCULATION (EGR) SENSOR A CIRCUIT LOW
| Description: The EGR monitor checks the differential pressure feedback EGR sensor signal to the PCM for low voltage. This DTC sets when the average voltage to the PCM drops to a voltage less than the minimum calibrated value. | |||
Possible Causes:
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| Diagnostic Aids: A DPFEGR PID reading less than 0.05 volt with the ignition ON, engine OFF or running indicates a hard fault. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST HH: EXHAUST GAS RECIRCULATION SYSTEM MODULE (ESM) . | ||
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.