1998 Kia Optima P0121 Fault Code Check

When you check 1998 Kia Optima car engine light came on code P0121 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Kia manufacturer may have a different definition for the P0121 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

To solve P0121 1998 1998 Kia Optima 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

1998 Kia Optima P0121 OBD-II Diagnostic Powertrain (P) Trouble Code Description 1998 Kia Optima car P0121 OBD-II Trouble Code The throttle position sensor ( Reason For 1998 Kia Optima P0121 Code The reason of 1998 Kia Optima P0121 OBD-II Fault Code Check is P0121 Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance.

1998 Kia Optima P0121 Possibble Fix Ways :

The engine relies on the glow plugs to generate heat to help with the combustion cycle. Some engines only use the glow plugs when cold but others will allow the glow plugs to work when the ECU (vehicle's computer) needs them to be on to help with combustion. Problems in this area will cause diesel engine starting problems, uneven running and white smoke when the engine is cold.

While fuel economy was increased, acceleration was seriously compromised, and the loss of engine vacuum led to a dangerous loss of braking assist when the P0121 1998 1998 Kia Optima code system was in four-cylinder mode. In addition to these issues, while the company proposed a hydraulically controlled system that could be switched from within the car, the version they implemented had to be manually changed in the engine compartment using hand tools.

What does fault code P0121 mean for 1998 Kia Optima ? What does a diagnostic reading P0121 mean for 1998 Kia Optima ? How to fix OBD2 Code P0121 for 1998 Kia Optima ? What do we know about P0121 code for 1998 Kia Optima ?