× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
2001 Hyundai Elantra GLS 2.0L Hesitation, Surge, MIL Lamp on
Posted to Asian Driveability on 10/11/2005 10 Replies

Hello hyundai techs: I have this 01 elantra with MIL on and code P121. The car idles rough and hesitates on acceleration. My scan tool did not have the description of this DTC. I have also checked Alldata and found none . Can you please help.

10 Replies Received (View Replies)

  Related Documents & Media  2001 Hyundai Elantra GLS

 
Message Closed w/FIX

car Vehicle Data

2001 Hyundai Elantra GLS

VIN KMHDN45D21
Engine2.0 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsHesitation, Surge, MIL Lamp On
OccursUnder Load, on Accel

Trouble Codes

P0121Throttle Position Sensor Range/Performance
Message Closed w/FIX

car Vehicle Data

2001 Hyundai Elantra GLS

VIN KMHDN45D21
Engine2.0 L / 4 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsHesitation, Surge, MIL Lamp On
OccursUnder Load, on Accel

Trouble Codes

P0121Throttle Position Sensor Range/Performance