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Author Topic: Chasing P2138. Stumped... -Solved-  (Read 1133 times)

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Offline S.P.

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Chasing P2138. Stumped... -Solved-
« on: August 04, 2012, 10:33:39 PM »
P2138: Accel Pedal Pos (APP) Sensor 1-2 Correlation

I've been intermittently popping this fault for the past month. It began when I found a harness and idler pulley chaffing. The chaff wrap and a bit of insulation was worn through but no wires were showing. Pic:


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To me that didn't seem like enough damage to cause any issues. I replaced the accelerator pedal assembly and all was well for a few weeks, then the code returned. I've also exhausted the following fixes that worked for others:

Replaced throttle body
Cleaned/Applied dielectric grease to APP Sensor, Purge Solendoid, Throttle body, and MAF connectors.

The only thing I haven't checked is the Instrument Panel (IP) to body harness connector. Does anyone know where I can find this? Could that small chaff spot on the harness really be the root cause?
« Last Edit: September 24, 2012, 08:03:59 PM by S.P. »
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Offline Gentleman Jack

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Re: Chasing P2138. Stumped...
« Reply #1 on: August 04, 2012, 11:28:58 PM »
I would be really surprised if that little nik caused any problems.  Not familiar with that CEL though.
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Offline S.P.

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Re: Chasing P2138. Stumped... -Solved-
« Reply #2 on: September 24, 2012, 08:03:20 PM »
After doing a ton of research I found a thread on skyroadster where someone was having a similar issue that got resolved by soldering the wires at connector C100 together. I took the connector apart and cleaned it. Also applied dielectric grease for good measure. In the 3 weeks since the code hasn't repeated- the longest yet. Glad I didn't have to solder anything. Attached pics of the connector:










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