P2176: owner reports and bulletins

Powertrain (generic, all makes). We haven't written the explanation for this code yet. Below is what owners and manufacturers have filed with NHTSA.

Got P2176 on your scanner? Tell the mechanic your year, make, model and any symptoms and you'll get the likely cause and what to check first. Ask about this code.

What owners report to NHTSA

9 complaints filed with NHTSA mention P2176, 4 of them since 2015, across 7 different models. The component owners most often filed it under: electronic stability control (esc).

Manufacturer service bulletins that name P2176

17 technical service bulletins and manufacturer communications filed with NHTSA mention P2176, from 9 makes. A bulletin means the manufacturer has documented a known cause or a fix procedure for that model. Examples:

  • CADILLAC CTS (2007, 2008, 2009, 2010), bulletin 10126975: This PI was superseded to update model years and add information concerning idle surge, reduced engine power mode, and/or DTCs P0068, P0121, P1516, P2101, P2119, and/or P2176 that may be experienced on high mileage vehic…
  • CHEVROLET AVALANCHE (2007, 2008, 2009, 2010), bulletin 10126975: This PI was superseded to update model years and add information concerning idle surge, reduced engine power mode, and/or DTCs P0068, P0121, P1516, P2101, P2119, and/or P2176 that may be experienced on high mileage vehic…
  • GMC CANYON (2008, 2009, 2006, 2007), bulletin 10126975: This PI was superseded to update model years and add information concerning idle surge, reduced engine power mode, and/or DTCs P0068, P0121, P1516, P2101, P2119, and/or P2176 that may be experienced on high mileage vehic…
  • ACURA RLX (2014), bulletin 10057139: ACURA: 2014 RLX MIL COMES ON WITH CODE DTC P2176 WHICH IS THE THROTTLE ACTUATOR CONTROL SYSTEM IDLE POSITION NOT LEARNED. *LJ
  • HONDA ACCORD (2013, 2014), bulletin 10115784: Service bulletin - The MIL comes on with DTC P2176 (throttle actuator control system idle position not learned). The PCM misinterprets the throttle position sensor signals and sets DTC P2176.
  • HONDA CROSSTOUR (2013), bulletin 10057461: HONDA 2013 ACCORD, CIVIC , CROSSTOUR V6 2WD 4WD: THIS BULLETIN HAS BEEN UPDATED TO REMOVE 2014 ACCORD PLUG-IN. THE MIL COMES ON WITH DTC P2176 DUE TO MISINTERPRETING THROTTLE POSITION SIGNALS SENSOR. *LJ

Sources: NHTSA Office of Defects Investigation complaint database and manufacturer communications file, snapshots September 2026. A complaint or bulletin that mentions a code is a report about that vehicle, not a statement that the code has one cause.