Gray Model O C121F Engine Trouble Code

When your car's 'Gray Model O C121F Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. But in many cases, it means at minimum that you'll be visiting the car dealer to locate the malfunction and get the light turned off.

Gray Model O C121F Code Meaning :

When you check Gray Model O car engine light came on code C121F the reason should be . However manufacturer may have a different definition for the C121F OBD-II Diagnostic Chassis (C) Trouble Code. So you should chech it on our car models.

C121F OBD-II Diagnostic Chassis (C) Trouble Code Description

C121F engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.

Reason For C121F Code

The reason of C121F OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

C121F 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.

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