Engine-Codes - Buick - P2101 BUICK

P2101 BUICK Code - Throttle Actuator Position Performance

- Code Popularity: 10,781 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 2/3
Table of contents

|What are the Possible Causes of the P2101 BUICK Code?

  • Faulty Throttle Actuator Control (TAC) module
  • Throttle Actuator Control (TAC) module harness is open or shorted
  • Throttle Actuator Control (TAC) module circuit poor electrical connection

|How to Fix the P2101 BUICK Code?

Start by checking 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's pins.

|P2101 BUICK code tech notes

There is a factory service bulletin for the P2101 code on following Buick vehicles:

2004 Buick Rainier
2005 Buick Rainier
2006 Buick Rainier
2007 Buick Rainier
2004-2007 Buick Rainier Factory Service Bulletin OBDII Code P2101

|What is the cost to diagnose the P2101 BUICK code?

Labor: 1.0

The cost to diagnose the P2101 BUICK code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|When is the P2101 BUICK code detected?

The Engine Control Module (ECM) has detected an out of range condition between the predicted and actual throttle position.

|What are P2101 BUICK code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)
  • No throttle response

|What Does the P2101 BUICK Code Mean?

The Engine Control Module (ECM) is the control center for the Throttle Actuator Control (TAC) system. The ECM determines the drivers intent and then calculates the appropriate throttle response. The ECM achieves throttle positioning by providing a pulse width modulated voltage to the TAC motor. The TAC system uses the following circuits for Motor control 1 and Motor control 2.
Two processors are also used to monitor the TAC system data. Both processors are located within the ECM. Both processors monitor each other's data to verify that the indicated throttle position is correct.

Throttle Actuator Position Performance

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