Logo

C1221 Engine Trouble Code

Meaning of C1221 engine trouble code is : When your car's 'C1221 Check Engine' light comes on, it's usually accompanied by a sinking feeling in the pit of your stomach. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. But in many cases, it means at minimum that you'll be visiting the car dealer to locate the malfunction and get the light turned off.

C1221 Possible Solution:

C1221 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.

C1221 Code Meaning :

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

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.

C1221 OBD-II Diagnostic Chassis (C) Trouble Code Description

C1221 engine trouble code is about Crankshaft Position Sensor A Circuit Low Input.

Reason For C1221 Code

The reason of C1221 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 C1221 DTC. The vehicle service manual should be consulted for more information on possible causes of the fault, along with required testing.