Your Citroen C4 Aircross engine control system detects a problem, the computer stores the diagnostic trouble
code B3121 in its memory.
To figure out what is wrong with your vehicle you must first extract the B3121 DTC For Citroen C4 Aircross.
To solve B3121 Citroen C4 Aircross problem, you'll have to remove the muffler, crankcase and other components blocking the valve chamber. Then, remove the cylinder head bolts (label for easy re-installation) Adjust the jaws of the valve spring compressor until they touch the top and bottom of the valve chamber Push the tool in to compress the spring and tighten the jaws Remove the retainers and lift out the valves , compressors and springs
B3121 Citroen C4 Aircross DTC Meaning
Body Code - Problem is antilock brake system, electronic suspension and steering systems.
SAE - Generic
Fuel And Air Metering
Cruise Control Servo Indicates Low
PCM Stack Overrun
When you turn on the ignition, the Service Engine Soon or Check Engine B3121 Citroen C4 Aircross light should flash briefly, indicating that the OBD system is ready to scan your vehicle for any malfunctions. After this brief flash, the light should stay off while you drive as long as no problems are detected. If B3121 DTC For Citroen C4 Aircross so, you'll be glad to know that your vehicle is equipped with an early warning system that could save you time, money, and fuel in addition to helping protect the B3121!