Error code

OBD2 P0223

OBD2P0223
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Throttle/Pedal Position Sensor/Switch 'B' Circuit High.

Severity

moderateCan drive, but performance issues may occur.

Summary

P0223 indicates that the throttle position sensor B or accelerator pedal position sensor B is providing an abnormally high voltage signal to the engine control module (ECM). This issue typically affects drive-by-wire systems without physical connections between the pedal and throttle.

Symptoms

  • Check Engine light illuminated
  • Visible black smoke from tailpipe at startup
  • Hard or no-starting conditions
  • Poor acceleration
  • Power loss
  • Rough idling
  • Hesitation or stalling upon acceleration

Common Causes

  • Damaged, short-circuited, or corroded wiring and connectors
  • Defective throttle position sensor (TPS) or pedal sensors
  • Mal-adjusted TPS sensors
  • Mechanical wear in the TPS sensor and/or throttle body
  • Carbon deposits impeding throttle plate movement

Diagnosis

  1. Check for correct adjustment of the TPS sensor
  2. Inspect wiring and connectors for damage or corrosion
  3. Test sensors' output with a suitable scanner
  4. Clean throttle body if carbon deposits are present

Fixes

  • Replace defective TPS or pedal sensors

FAQ

What does P0223 mean?

P0223 indicates an abnormally high voltage signal from the throttle position sensor B or accelerator pedal position sensor B to the ECM.

How do I fix P0223?

Fixes include replacing defective sensors, cleaning carbon deposits from the throttle body, and inspecting wiring for damage.

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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