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P0438 Engine Trouble Code

P0438 Engine

When you check engine light came on code P0438 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 P0438 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P0438 if your catalytic convertor fails completely, you eventually won't be able to keep the car running. Your gas mileage will also be terrible, so you should try and fix it as soon as you can. Unfortunately, the average replacement cost is around $2,000 and you can't do it yourself unless you're an experienced mechanic.

P0438 Code Meaning :

P 0 4 3 8
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Intake Valve Control Solenoid Circuit Low Fuel Temperature Sensor B Circuit Range/Performance Cold Start Injector 1 Malfunction Timing Reference High Resolution Signal A Too Many Pulses

Is the fuel pump sometimes not priming when you turn the key to ON(II)? Start by measuring the fuel pressure and checking whether you have bright white-bluish spark at all four plugs. The mechanical timing is also something that you should check, as we mentioned above.

P0438 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P0438 OBD-II Trouble Code The Engine Control Module ( P0438 code.

Reason For P0438 Code

The reason of P0438 OBD-II Engine Trouble Code is Fuel Temperature Sensor B Circuit Range/Performance.

P0438 code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission.