1999 Gmc S15 P0121 Fault Code Check
When you check 1999 Gmc S15 car engine light came on code P0121 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Gmc 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 1999 1999 Gmc S15 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
1999 Gmc S15 P0121 OBD-II Diagnostic Powertrain (P) Trouble Code Description1999 Gmc S15 car P0121 OBD-II Trouble Code The throttle position sensor (Reason For 1999 Gmc S15 P0121 CodeThe reason of 1999 Gmc S15 P0121 OBD-II Fault Code Check is P0121 Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance. |
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1999 Gmc S15 P0121 Possibble Fix Ways :
The most likely cause of this is that there is no refrigerant left in your system. This could be caused by a leak in your system somewhere, which will have to be fixed before refilling the refrigerant. If you're car-savvy and you own a set of air conditioning gauges, refilling the refrigerant is usually easy to do yourself. However, if you're not so confident, enlist the help of a knowledgeable friend or take a quick trip to the mechanic.
There are currently two main types of cylinder deactivation used today, depending on the type of engine. P0121 1999 1999 Gmc S15 code for the pushrod design which uses solenoids to alter the oil pressure delivered to the lifters. In their collapsed state, the lifters are unable to elevate their companion pushrods under the valve rocker arms, resulting in valves that cannot be actuated and remain closed.
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What does fault code P0121 mean for 1999 Gmc S15 ?
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