P2176: Throttle Actuator A Control System - Idle Position Not Learned
What Does P2176 Mean?
P2176 is a diagnostic trouble code indicating: Throttle Actuator A Control System - Idle Position Not Learned. This code relates to the powertrain system. It has been reported in NHTSA complaints across 5 different vehicle models.
Symptoms of P2176
- ⚠️ Check engine light illuminated
- ⚠️ Loss of engine power
- ⚠️ Sluggish acceleration
- ⚠️ Unusual vibrations
- ⚠️ Traction control system activated
- ⚠️ Vehicle enters limp/reduced power mode
Common Causes
- 🔍 Throttle body or throttle position sensor issue
- 🔍 Sensor or control module malfunction
P2176 Reports by Year
Real Owner Reports
From NHTSA complaint database — actual owner descriptions.
"I WAS PULLING AWAY FROM A STOP SIGN AND HAD ACCELERATED TO ABOUT 15 MPH. ALL OF A SUDDEN THE CAR SLOWED DOWN AND STOPPED. I STEPPED ON THE ACCELERATOR AND THE CAR DIDN'T MOVE AND THE ENGINE SHUT DOWN. AT THE SAME TIME ALL THE DASH WARNING LIGHTS CAME ON, INCLUDING CHECK ENGINE, THE BIG EXCLAMATION M"
— Honda Accord owner, 03/27/2013
"UPDATE ON COMPLAINT #'S 1144041 & 11172602. ON 2/8/19, I WAS 2 BLOCKS FROM WORK WHEN MESSAGES DISPLAYED FOR (SERVICE ECS, REDUCED ENGINE POWER, CHECK ENGINE LIGHT). I DROVE RIGHT FROM WORK TO THE DEALERSHIP, WHICH WAS 9 MILES AWAY, WITH MY HAZARDS ON AND AT A MAX SPEED OF 25 MPH. I DROVE IT INTO TH"
— Chevrolet Malibu owner, 03/08/2019
"CHEVY TRAVERSE 2010 WITH 74K MILES. DRIVING VEHICLE ON HIGHWAY DURING MORNING TRAFFIC. VEHICLE CHECK ENGINE LIGHT CAME ON, SERVICE STABILITRAK WARNING, TRACTION CONTROL OFF WARNING, AND REDUCED ENGINE POWER WARNING. VEHICLE SUDDENLY REDUCED ENGINE POWER FROM 65MPH TO 25MPH. PULLED VEHICLE OVER A"
— Chevrolet Traverse owner, 12/29/2014
Source: NHTSA Complaints Database
Most Reported Vehicles for P2176
Based on NHTSA owner complaint data.
| # | Vehicle | Reports |
|---|---|---|
| 1 | CHEVROLET TRAVERSE | |
| 2 | CHEVROLET IMPALA | |
| 3 | HONDA ACCORD | |
| 4 | CHEVROLET MALIBU | |
| 5 | CHEVROLET TAHOE |
P2176 Reports by Vehicle
Detailed NHTSA complaint analysis for each vehicle model.
Frequently Asked Questions
Can I drive with this code?
Will this code clear itself?
How do I find the exact cause?
What To Do Next
Possible Fixes
- 🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
- 🔧 Test the relevant sensor(s) with a multimeter before replacing
- 🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.