× 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

P1121 Diagnostic Trouble Code Discussion for September 2009

Electronic Throttle Control Actuator Malfunction

Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P1121
Help Request Posted
1999 Mercury Sable LS 3.0L Surge, surges in drive VIN: 1MEFM58S9X
P1121: TPS and MAF disagree. The problem with this car is it will accelerate on it's own in drive or reverse. When at idle in park or neutral everything is fine, idles around 700-720 rpm. Once the vehicle is put into drive it wants to take off. The brakes will barely hold the vehicle back...
September 01, 2009
2003 Kia Sorento LX 3.5L MIL Lamp on VIN: KNDJD73383
P1121: Throttle Position Signal Circuit Malfunction. Car has codes po700 and p1121. Tps tests good. Checked all grounds that i can find. Where to go from here? If i clear codes, it takes a few drive cycles for mil to come on.
September 18, 2009
2003 Nissan Maxima SE 3.5L idle speed VIN: JN1DA31A63
P1121: Electronic Throttle Control Actuator Malfunction. replaced electronic control throttle (ect) - using launch x431 to relearn idle air volume, when selecting function scanner causes idle to drop to spec. but then message reads please wait... does not complete the relearn. i'm pretty sure we are meeting all the ...
September 25, 2009