Logo

C129A Engine Trouble Code

Meaning of C129A engine trouble code is a kind of chassis trouble code and C129A 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.

C129A 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 C129A code is occuring now you should check C129A repair processes.
Now don't ask yourself; What should you do with C129A code ?
The solution is here :

C129A Possible Solution:

C129A Engine

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.

C129A Code Meaning :

C 1 2 9 a
OBD-II Diagnostic Chassis (C) Trouble Code For Engine Fuel And Air Metering Manifold Absolute Pressure/Barometric Pressure Circuit High Input Crankshaft Position Sensor A Circuit Malfunction

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate.

C129A OBD-II Diagnostic Chassis (C) Trouble Code Description

C129A engine trouble code is about .

Main reason For C129A Code

The reason of C129A OBD-II Engine Trouble Code is Manifold Absolute Pressure/Barometric Pressure Circuit High Input.

Parts or components should not be replaced with reference to only a C129A DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.