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DTC P0500-31: Vehicle Speed Sensor "A" No Signal [12/2019 - 10/2022]: Description

WARNING: This page is about a different variant/trim than selected.

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 pulse signal and outputs it to the ECM via the combination meter. The ECM determines the vehicle speed based on the frequency of this pulse signal.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P0500-31 Vehicle Speed Sensor "A" No Signal All of the following conditions are met (1-trip detection logic):
  • Park/neutral position switch D input signal is ON.
  • The counter gear speed is 300 rpm or more.
  • Any of the following conditions are met:
    1. Vehicle being driven in 1st gear:

      Transmission revolution sensor (NT) value is 1450 rpm or more.

    2. Vehicle being driven in 2nd gear:

      Transmission revolution sensor (NT) value is 840 rpm or more.

    3. Vehicle being driven in 3rd gear:

      Transmission revolution sensor (NT) value is 540 rpm or more.

    4. Vehicle being driven in 4th gear:

      Transmission revolution sensor (NT) value is 400 rpm or more.

    5. Vehicle being driven in 5th gear:

      Transmission revolution sensor (NT) value is 330 rpm or more.

    6. Vehicle being driven in 6th, 7th or 8th gear:

      Transmission revolution sensor (NT) value is 300 rpm or more.

  • No vehicle speed signal is transmitted to the ECM for 2 seconds.
  • Open or short in vehicle speed signal circuit
  • Combination meter system
  • ECM
 Comes on DTC stored SAE Code:
P0500
DTC DETECTION CONDITION PATTERNS:

  Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4
Diagnostic Condition Park/neutral position switch D input signal is ON. ◦ ◦ ◦ ◦
The counter gear speed is 300 rpm or more. ◦ ◦ ◦ ◦
When the vehicle is being driven in 1st gear, the transmission revolution sensor (NT) value is 1450 rpm or more. ◦ - - -
When the vehicle is being driven in 2nd gear, the transmission revolution sensor (NT) value is 840 rpm or more. - ◦ - -
When the vehicle is being driven in 3rd gear, the transmission revolution sensor (NT) value is 540 rpm or more. - - ◦ -
When the vehicle is being driven in 4th gear, the transmission revolution sensor (NT) value is 400 rpm or more. - - - ◦
Malfunction Condition No vehicle speed signal is transmitted to the ECM. ◦ ◦ ◦ ◦
Duration 2 seconds or more 2 seconds or more 2 seconds or more 2 seconds or more
Detection Logic 1-trip detection logic 1-trip detection logic 1-trip detection logic 1-trip detection logic
DTC DETECTION CONDITION PATTERNS:

  Vehicle Condition
Pattern 5 Pattern 6 Pattern 7 Pattern 8
Diagnostic Condition Park/neutral position switch D input signal is ON. ◦ ◦ ◦ ◦
The counter gear speed is 300 rpm or more. ◦ ◦ ◦ ◦
When the vehicle is being driven in 5th gear, the transmission revolution sensor (NT) value is 330 rpm or more. ◦ - - -
When the vehicle is being driven in 6th gear, the transmission revolution sensor (NT) value is 300 rpm or more. - ◦ - -
When the vehicle is being driven in 7th gear, the transmission revolution sensor (NT) value is 300 rpm or more. - - ◦ -
When the vehicle is being driven in 8th gear, the transmission revolution sensor (NT) value is 300 rpm or more. - - - ◦
Malfunction Condition No vehicle speed signal is transmitted to the ECM. ◦ ◦ ◦ ◦
Duration 2 seconds or more 2 seconds or more 2 seconds or more 2 seconds or more
Detection Logic 1-trip detection logic 1-trip detection logic 1-trip detection logic 1-trip detection logic

HINT: 

This DTC is stored when any of the above detection patterns is met.

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