Getting the following codes from a 1997 Pontiac Grand Am....... PO121 TPS / Pedal Position Sensor A CKT Range / Perf Also, PO341 Camshaft Position Sensor A - Bank 1 CKT Range/Perf. Any thoughts on the cause &/or a solution? LB
Po121 means that there is a problem with the throttle position sensor ( tps). or in the wiring or connector, most likely its the tps that is bad. first remove connection from tps, heres how to test. use an ohms meter and hook a lead to top or bottom terminal of tps. use other probe on center terminal of tps. move throttle plate slowly, if the needle on meter does not move at a smooth pace, then tps is bad. good-luck!!
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this should go to a dealer, you may have a timing chain/belt issue.
2005 kia rio. codes PO130 o2 sensor bank 1 and Po121 throttle/pedal position sensor- reolaced both and still car will not go when you stomp on accelerator. any ideas
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