Exhaust gas recirculation (EGR) system errors. Ford error codes

P0400

Code 0400 indicates that the microprocessor has registered no exhaust gas flow in the intake manifold. The EGR valve does not open due to breakage or the element channels are leaking or clogged. Problem P0400 may be related to a malfunction of the EGR temperature sensor.

 

P0401

Failure of the EGR system. Check the operation of the valve and replace it if necessary.

 

P0403

Exhaust gas recirculation system regulator circuit failure. Code P0403 requires a detailed wiring check.

 

P0404

If the 0404 combination occurs, the engine control unit reports a weak gas flow through the EGR. The operation of the gas recirculation system must be checked. Typically, problem 404 can be solved by installing a new EGR valve.

 

P0409

Damage to the wiring through which the exhaust system controller is connected. With the advent of code P0409 you need to test the integrity of the circuit.

 

P0420, P0430

The control unit recorded low catalyst efficiency. It is necessary to diagnose the catalytic converter. After fixing the error, the combination may remain in memory for a while, but it is automatically deleted.

 

P0442

A leak in the evaporation system was detected. The user must check all mains and pipes for leaks.

 

P0489

Open in the EGR valve power supply wiring. With the appearance of the code P0480 you need to diagnose the power line and replace it if necessary.

 

P0490

The combination of P0490 on the Ford Tourneo ConneCt and other models indicates a malfunction of the EGR controller. In particular, it means increased voltage in the electrical circuit of the device. You need to check the connection line for integrity and short circuit.

 

P042F

EGR valve jamming in upper position. Usually the code indicates a breakdown of the device, so it will have to be replaced.

 

P0405, 327

The voltage at the EGR valve pressure / position controller is below the allowable minimum.

 

P1305

Failure or malfunction of the EGR sensor.

 

P1408

EGR malfunction. Detailed diagnostics of the module, and also all components of knot concerning loss of tightness is required.

 

P1401, P1402

Combinations P1401 and P1402 indicate a fault in the exhaust gas recirculation valve. Detailed device diagnostics required.
The appearance of the code 1402 may be due to the hang of the part or its poor contact with the onboard network.

 

P1409

In the Ford Mondeo 4 and other models, the P1409 code indicates a problem with the exhaust gas recirculation system. The reason 1409 should be sought in the operation of sensors, as well as in the absence of tightness of the mains.

 

P141A

Exhaust gas recirculation is unstable. Problem P141A may be in controller A.