986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - 2003 Boxster S 3.2 No Run / No Start: P0121/P1121/P1122

pallen747 · 06-25-2021, 02:22 AM

Hi all, Need some tech help.
I am using Autel OBDI unit. Have the below codes and read outs. I have replaced the Throttle body - no change.
P0121 says Accel pedal potentiometer.
P1121 says Throttle position sensor 1.
P1122 says Throttle potentiometer 2.
From what I have read it could be the throttle pedal potentiometer failed or DME failed?? Possibly earth to DME from MAF??
One is a PITA but cheap to replace - the other, well extremely expensive the MAF is just a guess.
Anyone else had similar? Any advice?
Thanks.

06-25-2021, 02:22 AM	#1
pallen747 Registered User Join Date: Jun 2021 Location: Iceland Posts: 4	2003 Boxster S 3.2 No Run / No Start: P0121/P1121/P1122 Hi all, Need some tech help. I am using Autel OBDI unit. Have the below codes and read outs. I have replaced the Throttle body - no change. P0121 says Accel pedal potentiometer. P1121 says Throttle position sensor 1. P1122 says Throttle potentiometer 2. From what I have read it could be the throttle pedal potentiometer failed or DME failed?? Possibly earth to DME from MAF?? One is a PITA but cheap to replace - the other, well extremely expensive the MAF is just a guess. Anyone else had similar? Any advice? Thanks.