Check P0403 Fault Code

When you check engine light came on code P0403 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However your vehicle's manufacturer may have a different definition for the P0403 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

Parts or components should not be replaced with reference to only a P0403 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.

P0403 Possible Fix :

The engine relies on the glow plugs to generate heat to help with the combustion cycle. Some engines only use the glow plugs when cold but others will allow the glow plugs to work when the ECU (vehicle's computer) needs them to be on to help with combustion. Problems in this area will cause diesel engine starting problems, uneven running and white smoke when the engine is cold.

P0403 OBD-II Diagnostic Powertrain (P) Trouble Code Description P0403 OBD-II Trouble Code Early Exhaust Gas Recirculation (EGR) systems component s include and EGR Valve, and Engine Control Μodule (ECΜ) Controlled Vacuum Switch Valve or EGR Solenoid and an EGR Vacuum Μodulator. Dependin Reason For P0403 Code The reason of P0403 OBD-II Fault Code Check is P0403 Exhaust Gas Recirculation Circuit Malfunction.

P0403 Solution:

The firing order is an important part of the overall design of the engine and is determined during the design of the engine to eliminate as much engine vibration as possible. If the firing order is changed or adjusted, the ignition from the spark plug is delivered at the wrong time and the engine functions poorly or does not run. The firing order for a particular engine is typically found in the repair manual specific to that model.

What does fault code P0403 mean ? What does a diagnostic reading P0403 mean ? How to fix OBD2 Code P0403 ? What do we know about P0403 code ?

How to Clear P0403 Trouble Code

An OBD 2 scanner is the best and safest way to erase a DTC from your car's system. This scanner communicates with the car's computer and instructs the computer to erase the code. It does not change or tweak the settings from inside the car or its systems.