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DTC P0500: Vehicle Speed Sensor "A": Description

WARNING: This page is about a different car, the 2009 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.

The speed sensor detects the wheel speed and sends the appropriate signals to the skid control ECU. The skid control ECU converts these wheel speed signals into a 4-pulse signal and outputs it to the ECM via the combination meter. The ECM determines the vehicle speed based on the frequency of these pulse signals.

Fig 1: Identifying Speed Sensor Pulse Pattern
GTY103541Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
DTC No. DTC Detection Condition Trouble Area
P0500 While vehicle being driven, no vehicle speed sensor signal transmitted to ECM
(2 trip detection logic: Manual transaxle)
(1 trip detection logic: Automatic transaxle)
  • Open or short in speed signal circuit
  • Vehicle speed sensor
  • Combination meter
  • ECM
  • Skid control ECU