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P0666 Engine Trouble Code

P0666 Engine

When you check engine light came on code P0666 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 P0666 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P0666 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.

P0666 Code Meaning :

P 0 6 6 6
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Intake Valve Control Solenoid Circuit Low O2 Sensor Heater Circuit Malfunction Injection Pump Fuel Metering Control 'A' High (Cam/Rotor/Injector) Reverse Input Circuit

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.

P0666 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P0666 engine trouble code is about Reverse Input Circuit.

Reason For P0666 Code

The reason of P0666 OBD-II Engine Trouble Code is O2 Sensor Heater Circuit Malfunction.

P0666 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.