Oldsmobile Custom P921C Engine Trouble Code

Oldsmobile Custom P921C 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.

Oldsmobile Custom P921C Code Meaning :

When you check Oldsmobile Custom car engine light came on code P921C the reason should be . However manufacturer may have a different definition for the P921C OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P921C OBD-II Diagnostic Powertrain (P) Trouble Code Description

P921C engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.

Reason For P921C Code

The reason of P921C OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.

P921C 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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