Reference meaning
What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Narrow by vehicle
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P2176throttle actuator control system idle position not learned
P2176throttle actuator control system idle position not learned
Manufacturer communications
12Original wording in English
BUICK, CADILLAC, CHEVROLET, GMC, HUMMER, PONTIAC, SAAB
This PI was superseded to update model years and add information concerning idle surge, reduced engine power mode, and/or DTCs P0068, P0121, P1516, P2101, P2119, and/or P2176 that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 vehicles. Please discard PIP4578.
BUICK, CHEVROLET, GMC, HUMMER, SAAB
This Preliminary Information communication provides information to the technician about vehicles that may have Service Engine Soon Malfunction Indicator Lamp on and a reduced engine power after cold starting their engine when the ambient temperature is approximately ? 10 Fahrenheit (-23 Celsius). Technician may find Diagnostic T…
HONDA
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.
ACURA
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.
Check vehicle applicability
274A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.