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C1191 Engine Code Repair

Meaning of C1191 engine trouble code is a kind of chassis trouble code and C1191 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 $2,140 and you can't do it yourself unless you're an experienced mechanic.

C1191 Fault Symptoms :

  1. Check engine light comes on
  2. Engine stalling or misfiring
  3. Engine performance issues
  4. Car not starting

If one of these reasons for C1191 code is occuring now you should check C1191 repair processes.
Now don't ask yourself; What should you do with C1191 code ?
The solution is here :

C1191 Possible Solution:

C1191 Engine

Excessive air inflow can be caused by a vacuum leak, a dirty sensor or, an exhaust gas recirculation valve not closing properly. If the problem is not enough fuel, the culprit may be dirty injectors or fuel filters, a weak fuel pump or a leaky fuel pressure regulator. The lean fuel mix error may be accompanied by rough idling, engine misfires, hesitation during acceleration and overall poor engine performance.

C1191 Code Meaning :

C
OBD-II Diagnostic Chassis (C) Trouble Code For Engine

1
Fuel And Air Metering

1
Ambient Air Temperature Sensor Circuit Low

9
Ignition/Distributor Engine Speed Input Circuit Malfunction

1
Shift Solenoid E Performance or Stuck Off

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.

C1191 OBD-II Diagnostic Chassis (C) Trouble Code Description

C1191 engine trouble code is about Shift Solenoid E Performance or Stuck Off.

Main reason For C1191 Code

The reason of C1191 OBD-II Engine Trouble Code is Ambient Air Temperature Sensor Circuit Low.

C1191 DTCs may also be triggered by faults earlier down the line. For example, a dirty MAF sensor might be causing the car to overcompensate in its fuel-trim adjustments. As a result, oxygen sensors are likely to report fuel mixture problems.