Error code

OBD2 P0227

OBD2P0227
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Throttle/Pedal Position Sensor/Switch 'C' Circuit Low.

Severity

moderateCan drive, but performance issues may occur.

Summary

Code P0227 indicates a low input signal from the throttle position sensor or accelerator pedal position sensor C, which is part of the drive-by-wire system in your vehicle.

Symptoms

  • Check Engine light illuminated
  • Visible black smoke at startup
  • Hard starting or no-start 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. Perform a visual inspection of all wiring and connectors
  3. Test resistance, reference voltage, ground, and continuity checks on wiring and connectors
  4. Depress the pedal slowly while monitoring sensor output with a scanner
  5. Inspect throttle body for carbon deposits or obstructions

Fixes

  • Replace defective TPS or pedal sensors as needed.

FAQ

What does the P0227 code mean?

It indicates a low input signal from the throttle position sensor (TPS) or accelerator pedal position sensor C, which is part of your vehicle's drive-by-wire system.

How do I diagnose P0227?

Start by checking for correct TPS adjustment and inspecting wiring and connectors. Use a scanner to monitor the sensor output while depressing the pedal slowly, and check for carbon deposits in the throttle body.

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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