Error code

OBD2 P2110

OBD2P2110
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Throttle Actuator Control System - Forced Limited RPM.

Severity

highThe vehicle can be driven but with limited throttle response and performance issues.

Summary

Code P2110 indicates that the throttle actuator control system is in forced limited RPM mode due to an implausible signal from the heated oxygen sensor (HO2S) on bank 1.

Symptoms

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

Common Causes

  • Faulty Throttle Actuator Control (TAC) module or throttle body
  • Wiring issues to the TAC module, including shorts to positive or ground
  • Poor electrical connections at the TAC module
  • Failed Powertrain Control Module (PCM)

Diagnosis

  1. Check for technical service bulletins (TSB) related to the issue.
  2. Inspect the battery condition and ensure it is fully charged.
  3. Visually inspect the throttle plates for debris or sludge buildup.
  4. Clean the throttle body carefully without damaging components.
  5. Inspect wiring connections at both PCM and throttle body for damage.
  6. Check resistance of ETC motors (2-25 ohms typically).
  7. Verify voltage signals to each motor and wiring between PCM and TAC system.

Fixes

  • Clean the throttle body and perform a relearn procedure.
  • Replace faulty electrical connections or wiring.
  • Replace the TAC/ETC system (throttle body) if motor resistance is out of range.

FAQ

What should I do if my MIL light turns on with code P2110?

Start by checking the battery condition and cleaning the throttle body. If issues persist, inspect wiring connections and consider professional diagnosis.

Can a weak battery cause this code to appear intermittently?

Yes, a weak or undercharged battery can contribute to higher current draw at the electronic throttle motors, leading to intermittent P2110 codes.

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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