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Home >> Lexus >> 2017 >> IS 300 F Sport >> Repair and Diagnosis >> External Pages >> Different car >> Section 102 (Automatic Transmission System (Aa80E) - Diagnostic Codes (1 Of 2)) >> Automatic Transmission System >> DTC P0500: Vehicle Speed Sensor "A"; DTC P0502: Vehicle Speed Sensor "A" Circuit Low; DTC P0503: Vehicle Speed Sensor "A" Intermittent / Erratic / High [11/2021 - ] >> Description

DTC P0500: Vehicle Speed Sensor "A"; DTC P0502: Vehicle Speed Sensor "A" Circuit Low; DTC P0503: Vehicle Speed Sensor "A" Intermittent / Erratic / High [11/2021 - ]: Description

WARNING: This page is about a different car, the 2024 Lexus IS 500, 2023 Lexus IS 500, and 2022 Lexus IS 500. However, it is still accessible from the selected car via links, so may be relevant.

The transmission revolution sensor (SP2) detects the output shaft rotation speed and sends it to the TCM.

Based on the transmission revolution sensor (NT) signal and the transmission revolution sensor (SP2) signal, the TCM controls engine torque and shift timing.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory
P0500 Vehicle Speed Sensor "A" 1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
  1. 3 seconds or more after turning engine switch on (IG), +B voltage is 0 V or more
  2. Transmission revolution sensor (SP2) signal is not input
  3. 2 seconds (intake temperature -10°C (14°F) or more); or 8 seconds (intake temperature less than -10°C (14°F))
  4. 1-trip detection logic
  • Transmission revolution sensor (SP2)
  • Transmission wire
  • Harness and connector
  • TCM
Comes on DTC stored
P0502 Vehicle Speed Sensor "A" Circuit Low 1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
  1. 3 seconds or more after turning engine switch on (IG), +B voltage is 0 V or more
  2. Transmission revolution sensor (SP2) input signal voltage is less than 0.1 V
  3. 2 seconds
  4. 1-trip detection logic
  • Transmission revolution sensor (SP2)
  • Transmission wire
  • Harness and connector
  • TCM
Comes on DTC stored
P0503 Vehicle Speed Sensor "A" Intermittent / Erratic / High 1. Diagnosis Condition 2. Malfunction Status 3. Malfunction Time 4. Other
  1. 3 seconds or more after turning engine switch on (IG), +B voltage is 0 V or more
  2. Transmission revolution sensor (SP2) input signal voltage is more than 1.9 V
  3. 2 seconds
  4. 1-trip detection logic
  • Transmission revolution sensor (SP2)
  • Transmission wire
  • Harness and connector
  • TCM
Comes on DTC stored