P1515 on 2000-2010 Chevrolet Tahoe — Control Module Throttle Actuator Position Performance
1 vehicles · 1 makes · $120-$450 repair
Most Reported On
P1515 is an OBD-II diagnostic trouble code meaning “Control Module Throttle Actuator Position Performance.” A General Motors manufacturer-specific code for the Throttle Actuator Control (TAC) / electronic throttle system, which positions the throttle blade electronically instead of by cable. The control module commands the blade to a specific angle, then compares that command against what the throttle position sensors actually report; P1515 sets when the actual position does not match the commanded position. Vehicles commonly drop into Reduced Engine Power mode and the throttle may feel dead or hesitant. Because the vehicle can lose power in traffic, this should be addressed promptly. This code is most commonly reported on 2000-2010 Chevrolet Tahoe, with repair costs ranging from $120 to $450.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
P1515 does not use the standard P/B/C/U prefix. It may be a manufacturer-specific code, so verify that a scanner supports your exact year, model and module before buying.
FAQ
What does P1515 mean?
P1515 stands for "Control Module Throttle Actuator Position Performance." A General Motors manufacturer-specific code for the Throttle Actuator Control (TAC) / electronic throttle system, which positions the throttle blade electronically instead of by cable. The control module commands the blade to a specific angle, then compares that command against what the throttle position sensors actually report; P1515 sets when the actual position does not match the commanded position. Vehicles commonly drop into Reduced Engine Power mode and the throttle may feel dead or hesitant. Because the vehicle can lose power in traffic, this should be addressed promptly.
What are the most common causes of P1515?
The most common causes of P1515 are: Poor connection or corrosion at the throttle body / Throttle Actuator Control (TAC) module connector, Faulty TAC module, Failed throttle position (TPS) sensor or throttle body actuator motor, Dirty or carbon-fouled throttle body causing the blade to stick, Damaged wiring between the control module and the throttle body, Failed accelerator/throttle pedal position (APP/TPP) sensor, Failed ECM/PCM (rare — verify the throttle body and wiring first). The specific cause varies by vehicle.
How much does it cost to fix P1515?
Repair costs for P1515 range from $120 to $450, depending on the vehicle and root cause.
Which vehicles are affected by P1515?
Au7o has documented P1515 across 1 vehicle models from 1 manufacturers: Chevrolet.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.