P2138: Unraveling The Symptoms Of This Auto Fault Code. The P2138 fault code is a common issue in automobiles. It is indicated by the engine light turning on or the service engine soon warning light. This code is related to the throttle or pedal position sensor. The P2138 code indicates that there is a problem with the throttle or pedal.. The Acura Mechanic can help with your 2008 Acura TL's P2138 code and limp mode issue. And, how would you like to connect with the Mechanic - phone call or online chat? Customer: online. Answered by patc in 2 mins 8 months ago. patc. Expert. 14,409 satisfied customers.

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2006 2008 Acura Tl How To Replace Starter Motor DIY
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P2138 And other Electronic Throttle body Codes ( Codes Explained
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P2138 code (ACCELERATOR PEDAL POSITION SENSOR) fixed and replace spark
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P2138 code Accelerator Position Sensor & Control Arm (unrelated
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What is the P2138 Fault Code and how can it
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Code P2138
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2005 Acura TL 3.2 Victory Motors of Colorado

How to diagnose code P2138. Use a scan tool or code reader that graphs data to determine which APP sensor is triggering P2138. With the engine running and your car put in "Park," lightly press on the gas, and watch the graph on the scan tool to make sure the data doesn't dip or spike drastically (1:59 in the video above).. P2138 Acura Code - Accelerator Pedal Position Sensor A/B Incorrect Voltage Correlation. How to Fix. Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.