Codes after H/C install and tune, help needed
Thread Starter
Instructor
Joined: Feb 2007
Posts: 218
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From: Seaside Ca.
Codes after H/C install and tune, help needed
After installing H/C i sent my ecm out for a mail order tune before starting my '99 cp. Upon startup i got service abs, service traction control and reduced power and the following codes P0107, P1120, P1220, P1514, P1516. My battery is fully charged and i have disconnected and reconnected battery and cleared the codes only to have them come back. Car will not start now but did initially although in reduced power mode. I need to know what to check. I checked the grounds that i disconnected during the install and everything seems fine. Car only has 17k mi. No corrosion anywhere. TIA Bob
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Joined: Oct 2002
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From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
I would doublecheck all your wiring and various connections in the engine bay.
The P0107 is a MAP sensor code. This is the sensor on the back of the intake manifold. Also verify you connected the ground wire back to the rear of the left (driver's side) head.
The rest of the codes are all related to throttle position sensing. This is also what's causing the reduced power mode.
Check your throttle body connectiions, and also the connections at the TAC module, which you had to remove to get the PCM out. (it's the module that's fastened to the PCM).
The P0107 is a MAP sensor code. This is the sensor on the back of the intake manifold. Also verify you connected the ground wire back to the rear of the left (driver's side) head.
The rest of the codes are all related to throttle position sensing. This is also what's causing the reduced power mode.
Check your throttle body connectiions, and also the connections at the TAC module, which you had to remove to get the PCM out. (it's the module that's fastened to the PCM).
Thread Starter
Instructor
Joined: Feb 2007
Posts: 218
Likes: 0
From: Seaside Ca.
Thanks! The left side ground is in place.. i will check the TAC module connection. I know that when i pulled the pcm the far bracket screw was a pia to get to and remove. I had to move the wire harness up a little to get to the screw. The TB connections seem ok. I will pull them again and reconnect. Also will check the sensor on the back of the manifold. 
