Error code

OBD2 P2101

OBD2P2101
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Throttle Actuator Control Motor Circuit Range/Performance.

Severity

moderateCan drive, but performance issues and safety concerns may arise.

Summary

Code P2101 indicates an issue with the Throttle Actuator Control (TAC) motor's range or performance, typically located in the throttle body between the intake manifold and air filter.

Symptoms

  • Malfunction Indicator Light is ON
  • Electronic Throttle Control Indicator is ON
  • No throttle response – engine will only idle

Common Causes

  • Dirty or obstructed throttle plates/throttle body
  • Faulty TAC module/Throttle Body (especially if cleaned incorrectly)
  • Failed PCM (less common)

Diagnosis

  1. Check for technical service bulletins (TSB) related to the issue.
  2. Inspect throttle plates for debris or sludge buildup.
  3. Perform a functional test with a scan tool if available.
  4. Consider replacing the TAC system/Throttle Body Assembly if tests fail.

Fixes

  • Clean the throttle body and reattach the hose to the air filter housing.
  • Replace the Throttle Actuator Control (TAC) system or Throttle Body Assembly if cleaning does not resolve the issue.

FAQ

What should I do first when seeing this code?

Check for any technical service bulletins and inspect the throttle body for debris.

Is it safe to drive with P2101?

It is drivable but performance issues may occur, such as no throttle response. It's recommended to address the issue promptly.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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