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Subaru Ascent

Control parameters

The Subaru Ascent has 16 control parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Brake switch SUBARU_BRAKE_SWITCHConfirmed

  • Request22 12 33
  • Service 22DID 1233
  • Module7A2 → 7AA
  • Every250 ms
  • Testing

Example reply from a 2025 Subaru Ascent.

Bits 0 to 7 of the reply, 8 bits.

0x00 = 0 → 0

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2023 to 2025. In testing for 2020, 2026. Not supported for 2019, 2021 to 2022.

  1. The parameter's name and its ID in the OBDb. Confirmed shows when a response from a real car confirms the parameter.
  2. The clutch mark shows a Connectable, a parameter that Pelican surfaces in its interface.
  3. The service and PID/DID asked for, the control module it's sent to, and how often Pelican asks.
  4. The reply's bytes. The parameter's bytes are blue. Bytes for other parameters in the same reply are grayed out. Hover over a byte to see the parameter it represents.
  5. Where the parameter is in the response, and how Pelican converts the raw value into a value.
  6. A real reply, decoded. The raw value comes first, then the reading.
  7. Which model years have tested this parameter.

Absolute throttle position TPSAE J1979Confirmed

Throttle position at idle will usually be more than 0%, and throttle position at wide open throttle will usually be less than 100%.

Pelican can show this parameter as the throttle position.

  • Request01 11
  • Service 01PID 11
  • Module7E0 → 7E8
  • Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 100 ÷ 255)
Range
0 to 100 %
Unit
%

Confirmed for 2020, 2022. Supported for 2019, 2021, 2023 to 2025.

Absolute throttle position B TP_BSAE J1979Confirmed

Pelican can show this parameter as the throttle position.

  • Request01 47
  • Service 01PID 47
  • Module7E0 → 7E8
  • Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 100 ÷ 255)
Range
0 to 100 %
Unit
%

Confirmed for 2020, 2022.

Accelerator pedal position SUBARU_ACC_POS

  • Request22 10 A6
  • Service 22DID 10A6
  • Module7A2 → 7AA
  • Every250 ms
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 100 ÷ 255)
Range
0 to 100 %
Unit
%

In testing for 2019 to 2026.

Brake pedal position SUBARU_BRAKE_PRESSED

  • Request22 12 33
  • Service 22DID 1233
  • Module7E0 → 7E8
  • Every250 ms
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val ÷ 2.55)
Range
0 to 100 %
Unit
%

In testing for 2019 to 2026.

Brake switch SUBARU_BRAKE_SWITCHConfirmed

  • Request22 12 33
  • Service 22DID 1233
  • Module7A2 → 7AA
  • Every250 ms
  • Testing

Example reply from a 2025 Subaru Ascent.

Bits 0 to 7 of the reply, 8 bits.

0x00 = 0 → 0

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2023 to 2025. In testing for 2020, 2026. Not supported for 2019, 2021 to 2022.

Clutch pedal position SUBARU_CLUTCH_PRESSED

  • Request22 12 2F
  • Service 22DID 122F
  • Module7E0 → 7E8
  • Every250 ms
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val ÷ 2.55)
Range
0 to 100 %
Unit
%

In testing for 2019 to 2026.

Clutch switch SUBARU_CLUTCH_SWITCHConfirmed

  • Request22 12 2F
  • Service 22DID 122F
  • Module7A2 → 7AA
  • Every1 s
  • Testing

Example reply from a 2025 Subaru Ascent.

Bits 0 to 7 of the reply, 8 bits.

0x00 = 0 → 0

Formula
val
Range
0 to 255
Unit
Number

Confirmed for 2023 to 2025. In testing for 2020, 2026. Not supported for 2019, 2021 to 2022.

Knocking signal SUBARU_KNOCKING_SIGNALConfirmed

  • Request22 11 D0
  • Service 22DID 11D0
  • Module7A2 → 7AA
  • Every1 s
  • Testing

Example reply from a 2025 Subaru Ascent.

Bits 0 to 7 of the reply, 8 bits.

0x00 = 0 → 0 °

Formula
val
Range
0 to 255 °
Unit
°

Confirmed for 2023 to 2025. In testing for 2020, 2026. Not supported for 2019, 2021 to 2022.

Relative throttle position TP_RSAE J1979Confirmed

Relative or 'learned' throttle position.

  • Request01 45
  • Service 01PID 45
  • Module7E0 → 7E8
  • Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 100 ÷ 255)
Range
0 to 100 %
Unit
%

Confirmed for 2020, 2022. Supported for 2021, 2023.

Steering wheel angle SUBARU_STEER_ANGLEConfirmed

  • Request21 47
  • Service 21PID 47
  • Module7B0 → 7B8
  • Every250 ms
  • Testing

Bits 24 to 39 of the reply, 16 bits.

Formula
(val ÷ 10 − 3276.8)
Range
-3276 to 3276.7 °
Unit
°

Confirmed for 2019 to 2025. In testing for 2026.

Steering wheel angle SUBARU_STEER_ANGLE_7B0

  • Request22 10 29
  • Service 22DID 1029
  • Module7B0 → 7B8
  • Every250 ms
  • Testing

Bits 0 to 15 of the reply, 16 bits. The value is signed.

Formula
val
Range
-32767 to 32767 °
Unit
°

In testing for 2019 to 2026.

Steering wheel angle SUBARU_STEER_ANGLE_V2

  • Request22 10 29
  • Service 22DID 1029
  • Module7B0 → 7B8
  • Every250 ms
  • Testing

Bits 0 to 15 of the reply, 16 bits. The value is signed.

Formula
val
Range
-32768 to 32767 °
Unit
°

In testing for 2019 to 2026.

Steering wheel angle, v2 SUBARU_STEER_ANGLE_746

  • Request22 10 32
  • Service 22DID 1032
  • Module746
  • Every250 ms
  • Testing

Bits 0 to 7 of the reply, 8 bits. The value is signed.

Formula
(val × 5)
Range
-640 to 635 °
Unit
°

In testing for 2026. Not supported for 2019 to 2025.

Control › Pedals

Accelerator pedal position (relative) APP_RSAE J1979Confirmed

  • Request01 5A
  • Service 01PID 5A
  • Module7E0 → 7E8
  • Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 100 ÷ 255)
Range
0 to 100 %
Unit
%

Confirmed for 2019 to 2020, 2023.

Accelerator pedal position D APP_DSAE J1979Confirmed

  • Request01 49
  • Service 01PID 49
  • Module7E0 → 7E8
  • Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 100 ÷ 255)
Range
0 to 100 %
Unit
%

Confirmed for 2019 to 2020, 2023.

Accelerator pedal position E APP_ESAE J1979Confirmed

  • Request01 4A
  • Service 01PID 4A
  • Module7E0 → 7E8
  • Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 100 ÷ 255)
Range
0 to 100 %
Unit
%

Confirmed for 2019 to 2020, 2023.

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