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U1229 Engine Trouble Code

Meaning of U1229 engine trouble code is : U1229 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.

U1229 Possible Solution:

U1229 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.

U1229 Code Meaning :

U 1 2 2 9
OBD-II Diagnostic Network (U) Trouble Code For Engine Fuel And Air Metering Manifold Absolute Pressure/Barometric Pressure Circuit High Input Turbocharger Boost Sensor A Circuit Low 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.

U1229 OBD-II Diagnostic Network (U) Trouble Code Description

U1229 engine trouble code is about Reverse Input Circuit.

Reason For U1229 Code

The reason of U1229 OBD-II Engine Trouble Code is Manifold Absolute Pressure/Barometric Pressure Circuit High Input.

U1229 the main thing to check is to verify the operation of the VCT solenoid. You're looking for a sticking or stuck VCt solenoid valve caused by contamination. Refer to vehicle specific repair manual to perform component tests for the VCT unit.