Error code

OBD2 P0222

OBD2P0222
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 Low.

Severity

moderateDrive with caution; symptoms may worsen over time.

Summary

P0222 indicates that the throttle position sensor B or accelerator pedal position sensor B is providing a low input signal to the PCM.

Symptoms

  • Check Engine light illuminated
  • Visible black smoke from tail pipe at start up
  • Hard starting, 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 TPS or pedal sensors
  • Mal-adjusted TPS sensors
  • Mechanical wear in the TPS sensor and/or throttle body
  • Carbon deposits in the throttle body impeding movement

Diagnosis

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

Fixes

  • Replace defective TPS or pedal sensors as needed.

FAQ

What should I do if the P0222 code persists after cleaning and adjusting?

If the issue continues, it may be necessary to replace faulty components such as the TPS sensor or throttle body.

Can carbon buildup in the throttle body cause this code?

Yes, excessive carbon deposits can impede the movement of the throttle plate and trigger P0222.

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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