P0503

2017-10-10

Description:

  • The fault code P0503 indicates that there is an intermittent, erratic, or high signal from the Vehicle Speed Sensor 'A'. This may cause issues with vehicle speed regulation and drivability.

Possible Symptoms:

  • Intermittent or erratic speedometer readings

  • Inaccurate speedometer readings

  • Harsh shifting or transmission problems

  • Illuminated check engine light

Possible Causes:

  • Faulty or damaged Vehicle Speed Sensor 'A'

  • Wiring or connection issues in the circuit

  • Malfunctioning instrument cluster

  • Failed powertrain control module (PCM)

Related Parts:

  • Vehicle Speed Sensor:

Possible Solutions:

  • Replace the faulty or damaged Vehicle Speed Sensor 'A'

  • Check and repair any damaged wiring or connections in the circuit

  • Replace the malfunctioning instrument cluster

  • Replace the powertrain control module (PCM) if necessary

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