Mazda 3 C1391 Engine Trouble Code
Mazda 3 C1391 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.
Mazda 3 C1391 Code Meaning :
OBD-II Diagnostic Chassis (C) Trouble Code For Engine
Fuel And Air Metering
Engine Oil Temperature Sensor Malfunction
Cylinder 10 Contribution/balance Fault
Exhaust Gas Recirculation Sensor B Circuit High

When you check Mazda 3 car engine light came on code C1391 the reason should be . However manufacturer may have a different definition for the C1391 OBD-II Diagnostic Chassis (C) Trouble Code. So you should chech it on our car models.
C1391 OBD-II Diagnostic Chassis (C) Trouble Code Description
C1391 engine trouble code is about Exhaust Gas Recirculation Sensor B Circuit High.Reason For C1391 Code
The reason of C1391 OBD-II Engine Trouble Code is Engine Oil Temperature Sensor Malfunction.C1391 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.
C1390 Previous Engine Trouble Code For Mazda 3 | Next Engine Trouble Code For Mazda 3 C1392 |