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Mazda Nextourer P1391 Engine Trouble Code

Mazda Nextourer P1391 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 Nextourer P1391 Code Meaning :

P 1 3 9 1
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine Fuel And Air Metering Throttle/Pedal Position Sensor/Switch A Circuit Intermittent Crankshaft Position Sensor A Circuit Malfunction Crankshaft Position Sensor A Circuit Low Input
Mazda Nextourer Engine

When you check Mazda Nextourer car engine light came on code P1391 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However manufacturer may have a different definition for the P1391 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P1391 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 P1391 code is occuring now you should check P1391 repair processes.
Now don't ask yourself; What should you do with P1391 code ?
The solution is here :

Mazda Nextourer P1391 Possible Solution :

Disconnected, dirty or fouled spark plugs are common causes for engines that won't start. Spark plugs typically need to be replaced every season or 25 hours of use. You should also check that the spark plug gap is set properly. If your spark plugs look good, problems with your ignition system can also preventing a spark. These can range from a faulty spark plug lead, shorted kill switch or flywheel key damage.

P1391 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1391 OBD-II Trouble Code Glow Plug Circuit Low Input Bank 1 is one of the definitions for the P1391; however your vehicles manufacturer may have a different definition for the P1391 code. Please check below for your specific P1391 code.

Reason For P1391 Code

The reason of P1391 OBD-II Engine Trouble Code is Throttle/Pedal Position Sensor/Switch A Circuit Intermittent.

Parts or components should not be replaced with reference to only a P1391 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.