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Subaru Ascent

Fuel parameters

The Subaru Ascent has 34 fuel parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Fuel injection 1 pulse width SUBARU_FUEL_INJ_1_WIDTHConfirmed

  • Request22 10 A3
  • Service 22DID 10A3
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Example reply from a 2022 Subaru Ascent.

Bits 0 to 7 of the reply, 8 bits.

0x04 = 4 → (4 × 32 ÷ 125) = 1.024 ms

Formula
(val × 32 ÷ 125)
Range
0 to 65.28 ms
Unit
ms

Confirmed for 2022. In testing for 2019 to 2021, 2023 to 2026.

  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.

Commanded Fuel Rail Pressure A FRP_A_CMDSAE J1979Confirmed

Displays commanded fuel rail pressure when the reading is referenced to atmosphere (gage pressure)

  • Request01 6D
  • Service 01PID 6D
  • Module7E0 → 7E8
  • Every250 ms

Bits 8 to 23 of the reply, 16 bits.

Formula
(val × 10)
Range
0 to 655350 kPa
Unit
kPa

Confirmed for 2019, 2022 to 2023.

Commanded Fuel Rail Pressure B FRP_B_CMDSAE J1979Confirmed

Displays commanded fuel rail pressure when the reading is referenced to atmosphere (gage pressure)

  • Request01 6D
  • Service 01PID 6D
  • Module7E0 → 7E8
  • Every250 ms

Bits 48 to 63 of the reply, 16 bits.

Formula
(val × 10)
Range
0 to 655350 kPa
Unit
kPa

Confirmed for 2019, 2022 to 2023.

Direct fuel injection time 1 SUBARU_DIRECT_FUEL_INJ_TIME_1

  • Request22 13 57
  • Service 22DID 1357
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 250)
Range
0 to 262.14 ms
Unit
ms

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

Direct fuel injection time 2 SUBARU_DIRECT_FUEL_INJ_TIME_2

  • Request22 13 58
  • Service 22DID 1358
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 250)
Range
0 to 262.14 ms
Unit
ms

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

Direct fuel injection time 3 SUBARU_DIRECT_FUEL_INJ_TIME_3

  • Request22 13 59
  • Service 22DID 1359
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 250)
Range
0 to 262.14 ms
Unit
ms

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

Direct fuel injection time 4 SUBARU_DIRECT_FUEL_INJ_TIME_4

  • Request22 13 5A
  • Service 22DID 135A
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 250)
Range
0 to 262.14 ms
Unit
ms

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

Engine exhaust flow rate EXH_RATESAE J1979Confirmed

  • Request01 9E
  • Service 01PID 9E
  • Module7E0 → 7E8
  • Every250 ms

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 5)
Range
0 to 13107 kg/h
Unit
kg/h

Confirmed for 2023.

Engine fuel rate (alternate) FUEL_RATE_ALTSAE J1979Confirmed

  • Request01 9D
  • Service 01PID 9D
  • Module7E0 → 7E8
  • Every250 ms

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 50)
Range
0 to 1310.7 g/s
Unit
g/s

Confirmed for 2023.

Fuel injection 1 pulse width SUBARU_FUEL_INJ_1_WIDTHConfirmed

  • Request22 10 A3
  • Service 22DID 10A3
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Example reply from a 2022 Subaru Ascent.

Bits 0 to 7 of the reply, 8 bits.

0x04 = 4 → (4 × 32 ÷ 125) = 1.024 ms

Formula
(val × 32 ÷ 125)
Range
0 to 65.28 ms
Unit
ms

Confirmed for 2022. In testing for 2019 to 2021, 2023 to 2026.

Fuel injector #2 pulse width SUBARU_FUEL_INJECTOR_2_PULSE_WIDTH

  • Request22 10 A4
  • Service 22DID 10A4
  • Module7A2 → 7AA
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val ÷ 3.90625)
Range
0 to 65.28 ms
Unit
ms

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

Fuel level SUBARU_FLI

Pelican can show this parameter as the fuel tank level.

  • Request22 00 2F
  • Service 22DID 002F
  • Module7E0 → 7E8
  • Every30 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

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

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

Fuel level, volume SUBARU_FLI_VOL

Pelican can show this parameter as the fuel tank level.

  • Request21 29
  • Service 21PID 29
  • Module7C0 → 7C8
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val ÷ 2)
Range
0 to 127.5 L
Unit
L

In testing for 2019 to 2026.

Fuel pump duty SUBARU_FUEL_PUMP_DUTYConfirmed

  • Request22 10 B3
  • Service 22DID 10B3
  • Module7A2 → 7AA
  • Every1 s
  • Testing

Example reply from a 2025 Subaru Ascent.

Bits 0 to 7 of the reply, 8 bits.

0xC0 = 192 → (192 × 100 ÷ 255) = 75.294118 %

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

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

Fuel rail pressure SUBARU_FRP

  • Request22 00 23
  • Service 22DID 0023
  • Module7A2 → 7AA
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 10)
Range
0 to 655350 kPa
Unit
kPa

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

Fuel Rail Pressure A FRP_ASAE J1979Confirmed

Displays fuel rail pressure when the reading is referenced to atmosphere (gage pressure).

  • Request01 6D
  • Service 01PID 6D
  • Module7E0 → 7E8
  • Every250 ms

Bits 24 to 39 of the reply, 16 bits.

Formula
(val × 10)
Range
0 to 655350 kPa
Unit
kPa

Confirmed for 2019, 2022 to 2023.

Fuel Rail Pressure B FRP_BSAE J1979Confirmed

Displays fuel rail pressure when the reading is referenced to atmosphere (gage pressure).

  • Request01 6D
  • Service 01PID 6D
  • Module7E0 → 7E8
  • Every250 ms

Bits 64 to 79 of the reply, 16 bits.

Formula
(val × 10)
Range
0 to 655350 kPa
Unit
kPa

Confirmed for 2019, 2022 to 2023.

Fuel Rail Temperature A FRT_ASAE J1979Confirmed

  • Request01 6D
  • Service 01PID 6D
  • Module7E0 → 7E8
  • Every250 ms

Bits 40 to 47 of the reply, 8 bits.

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

Confirmed for 2019, 2022 to 2023.

Fuel Rail Temperature B FRT_BSAE J1979Confirmed

  • Request01 6D
  • Service 01PID 6D
  • Module7E0 → 7E8
  • Every250 ms

Bits 80 to 87 of the reply, 8 bits.

Formula
(val − 40)
Range
-40 to 215 °C
Unit
°C

Confirmed for 2019, 2022 to 2023.

Fuel system 1 status FUELSYS1SAE J1979Confirmed

  • Request01 03
  • Service 01PID 03
  • Module7E0 → 7E8
  • Every250 ms

Bits 0 to 7 of the reply, 8 bits.

Unit
Named states
States
Raw valueStateMeaning
0OFFEngine is off
1OLOpen loop - has not yet satisfied conditions to go closed loop
2CLClosed loop - using oxygen sensor(s) as feedback for fuel control
4OL-DriveOpen loop due to driving conditions (e.g. power enrichment, deceleration enleanment)
8OL-FaultOpen loop - due to detected system fault
16CL-FaultClosed loop, but fault with at least one oxygen sensor - may be using single oxygen sensor for fuel control
32OL B2Open loop - has not yet satisfied conditions to go closed loop (Bank 2)
64OL-Drive B2Open loop due to driving conditions (Bank 2) (e.g. power enrichment, deceleration enleanment, cylinder deactivation)
128OL-Fault B2Open loop - due to detected system fault (Bank 2)

Confirmed for 2019, 2022 to 2023. Supported for 2020 to 2021, 2024 to 2025.

Fuel system 2 status FUELSYS2SAE J1979Confirmed

  • Request01 03
  • Service 01PID 03
  • Module7E0 → 7E8
  • Every250 ms

Bits 8 to 15 of the reply, 8 bits.

Unit
Named states
States
Raw valueStateMeaning
0OFFEngine is off
1OLOpen loop - has not yet satisfied conditions to go closed loop
2CLClosed loop - using oxygen sensor(s) as feedback for fuel control
4OL-DriveOpen loop due to driving conditions (e.g. power enrichment, deceleration enleanment)
8OL-FaultOpen loop - due to detected system fault
16CL-FaultClosed loop, but fault with at least one oxygen sensor - may be using single oxygen sensor for fuel control
32OL B2Open loop - has not yet satisfied conditions to go closed loop (Bank 2)
64OL-Drive B2Open loop due to driving conditions (Bank 2) (e.g. power enrichment, deceleration enleanment, cylinder deactivation)
128OL-Fault B2Open loop - due to detected system fault (Bank 2)

Confirmed for 2019, 2022 to 2023. Supported for 2020 to 2021, 2024 to 2025.

Fuel tank air pressure SUBARU_FUEL_TANK_AIR_PRESSUREConfirmed

  • Request22 10 E6
  • Service 22DID 10E6
  • Module7A2 → 7AA
  • Every1 s
  • Testing

Example reply from a 2025 Subaru Ascent.

Bits 0 to 15 of the reply, 16 bits.

0x0000 = 0 → (0 ÷ 100) = 0

Formula
(val ÷ 100)
Range
0 to 655
Unit
Raw value

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

Fuel tank level FLISAE J1979Confirmed

Pelican can show this parameter as the fuel tank level.

  • Request01 2F
  • Service 01PID 2F
  • Module7E0 → 7E8
  • Every1 s

Bits 0 to 7 of the reply, 8 bits.

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

Confirmed for 2019 to 2020, 2022 to 2023. Supported for 2021, 2024 to 2025.

Split ratio of fuel injection 1 SUBARU_SPLIT_RAT_FUEL_INJ_1

  • Request22 13 52
  • Service 22DID 1352
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 20 ÷ 51)
Range
0 to 100 %
Unit
%

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

Split ratio of fuel injection 2 SUBARU_SPLIT_RAT_FUEL_INJ_2

  • Request22 13 53
  • Service 22DID 1353
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 20 ÷ 51)
Range
0 to 100 %
Unit
%

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

Split ratio of fuel injection 3 SUBARU_SPLIT_RAT_FUEL_INJ_3

  • Request22 13 54
  • Service 22DID 1354
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 20 ÷ 51)
Range
0 to 100 %
Unit
%

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

Split ratio of fuel injection 4 SUBARU_SPLIT_RAT_FUEL_INJ_4

  • Request22 13 55
  • Service 22DID 1355
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 20 ÷ 51)
Range
0 to 100 %
Unit
%

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

Sub fuel pump relay switch SUBARU_SUB_FUEL_PUMP_RELAY_SWITCH

  • Request22 12 51
  • Service 22DID 1251
  • Module7A2 → 7AA
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
val
Range
0 to 255
Unit
Number

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

Vehicle fuel rate VFUEL_RATESAE J1979Confirmed

  • Request01 9D
  • Service 01PID 9D
  • Module7E0 → 7E8
  • Every250 ms

Bits 16 to 31 of the reply, 16 bits.

Formula
(val ÷ 50)
Range
0 to 1310.7 g/s
Unit
g/s

Confirmed for 2023.

Fuel › Internal

Commanded Fuel Rail Pressure A data supported? FRP_A_CMD_SUPSAE J1979Confirmed

  • Request01 6D
  • Service 01PID 6D
  • Module7E0 → 7E8
  • Every250 ms

Bit 7 of the reply.

Formula
val
Range
0 to 1
Unit
No or yes

Confirmed for 2019, 2022 to 2023.

Commanded Fuel Rail Pressure B data supported? FRP_B_CMD_SUPSAE J1979Confirmed

  • Request01 6D
  • Service 01PID 6D
  • Module7E0 → 7E8
  • Every250 ms

Bit 4 of the reply.

Formula
val
Range
0 to 1
Unit
No or yes

Confirmed for 2019, 2022 to 2023.

Fuel Rail Pressure A data supported? FRP_A_SUPSAE J1979Confirmed

  • Request01 6D
  • Service 01PID 6D
  • Module7E0 → 7E8
  • Every250 ms

Bit 6 of the reply.

Formula
val
Range
0 to 1
Unit
No or yes

Confirmed for 2019, 2022 to 2023.

Fuel Rail Pressure B data supported? FRP_B_SUPSAE J1979Confirmed

  • Request01 6D
  • Service 01PID 6D
  • Module7E0 → 7E8
  • Every250 ms

Bit 3 of the reply.

Formula
val
Range
0 to 1
Unit
No or yes

Confirmed for 2019, 2022 to 2023.

Fuel Temperature A data supported? FRT_A_SUPSAE J1979Confirmed

  • Request01 6D
  • Service 01PID 6D
  • Module7E0 → 7E8
  • Every250 ms

Bit 5 of the reply.

Formula
val
Range
0 to 1
Unit
No or yes

Confirmed for 2019, 2022 to 2023.

Fuel Temperature B data supported? FRT_B_SUPSAE J1979Confirmed

  • Request01 6D
  • Service 01PID 6D
  • Module7E0 → 7E8
  • Every250 ms

Bit 2 of the reply.

Formula
val
Range
0 to 1
Unit
No or yes

Confirmed for 2019, 2022 to 2023.

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