B1209 Engine Trouble Code
Meaning of B1209 engine trouble code is : B1209 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.
B1209 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.
B1209 Code Meaning :
|OBD-II Diagnostic Body (B) Trouble Code For Engine||Fuel And Air Metering||Manifold Absolute Pressure/Barometric Pressure Circuit High Input||Cold Start Injector 1 Malfunction||Reverse Input Circuit|
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.
B1209 OBD-II Diagnostic Body (B) Trouble Code DescriptionB1209 engine trouble code is about Reverse Input Circuit.
Reason For B1209 CodeThe reason of B1209 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 B1209 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.