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C0903 Chassis

TPMS Sensor 2 Position Performance

The tire pressure monitoring receiver cannot reliably localize sensor 2 to a wheel position. Pressure values may be assigned to the wrong wheel until relearn is completed.

Affected components

  • Tpms sensor
  • Tpms receiver

Common causes

  • High likelihood: Position relearn required
  • Medium likelihood: Weak sensor signal at receiver

Possible symptoms

  • ABS warning light on
  • ESC/stability control deactivated
  • Possible reduced brake assist
  • Speedometer may behave erratically

Related codes

Sources

Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.

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