- Sep 24, 2012
- 71
Hi everyone on this form.
I have a 2002 Chevy Trailblazer 2WD 4.2L and occasionally I’m getting CEL P1221 with Reduced Power Mode specially when I driving slowly.
When this happen I got my code reader (Innova 5610) cleared the codes and started it back up the engine don’t want to start and the lights came back on tired again to clear the codes and came back on again, clear the codes and came back on again, clear the codes and came back on again.
After 5 minutes clearing code finally it clear and the engine fire up.
I realize this has been covered numerous times and I have read several posts concerning this.
I did everything what is mentions but my problem seems, to me, a little different.
I have replace the throttle and the fan clutch with GM OEM parts.
Still I getting occasionally the CEL P1221 with Reduced Power Mode but only when the A/C is running specially when I driving slowly.
I know that when the A/C is running the temp will climb a bit but not the gauge temp.
I can see the fan clutch is turning with speed and I can feel it pulling quit warm air.
I can drove my vehicle with the A/C off for weeks or months without any problem.
Again this only happens occasionally when I have the A/C on and driving slowly.
Any suggesting on where I can look to fix this?
Thanks
I have a 2002 Chevy Trailblazer 2WD 4.2L and occasionally I’m getting CEL P1221 with Reduced Power Mode specially when I driving slowly.
When this happen I got my code reader (Innova 5610) cleared the codes and started it back up the engine don’t want to start and the lights came back on tired again to clear the codes and came back on again, clear the codes and came back on again, clear the codes and came back on again.
After 5 minutes clearing code finally it clear and the engine fire up.
I realize this has been covered numerous times and I have read several posts concerning this.
I did everything what is mentions but my problem seems, to me, a little different.
I have replace the throttle and the fan clutch with GM OEM parts.
Still I getting occasionally the CEL P1221 with Reduced Power Mode but only when the A/C is running specially when I driving slowly.
I know that when the A/C is running the temp will climb a bit but not the gauge temp.
I can see the fan clutch is turning with speed and I can feel it pulling quit warm air.
I can drove my vehicle with the A/C off for weeks or months without any problem.
Again this only happens occasionally when I have the A/C on and driving slowly.
Any suggesting on where I can look to fix this?
Thanks