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2002 Hyundai Elantra GT 2.0L MIL Lamp on, Bump downshift
Posted to Asian Driveability on 1/25/2013 7 Replies

The check engine light keeps coming on with code P0121 triggered. TPS has been replaced twice, check engine light came back on in a few days both times. Occasionally when driving the vehicle it will downshift with a bump around [...]. Anyone seen this?

Summary posted 2/22/2013

7 Replies Received (View Replies)

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car Vehicle Data

2002 Hyundai Elantra GT

Engine2.0 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMIL Lamp on, Bump Downshift
OccursOn Decel

Trouble Codes

P0121Throttle Position Sensor Range/Performance