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Ram 2500

Fuel parameters

The Ram 2500 has 44 fuel parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Fuel mass, cylinder 1 RAM2500_FUEL_MASS_CYL_1Confirmed

  • Request22 02 55
  • Service 22DID 0255
  • Module7E0 → 7E8
  • Every1 s
  • Testing for 2010 to 2020, 2022 to 2026

Example reply from a 2021 Ram 2500.

Bits 0 to 15 of the reply, 16 bits.

0x02E8 = 744 → (744 ÷ 64) = 11.625

Formula
(val ÷ 64)
Range
0 to 1023.9843
Unit
Raw value

Confirmed for 2021. In testing for 2010 to 2020, 2022 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 2014, 2019 to 2020, 2023. Supported for 2026.

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 2014, 2019 to 2020, 2023. Supported for 2026.

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 2019 to 2020, 2023 to 2024. Supported for 2026.

Engine fuel rate FUEL_RATESAE J1979Confirmed

Measured in units per hour

Pelican can show this parameter as the fuel rate.

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

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 20)
Range
0 to 3212.75 L/h
Unit
L/h

Confirmed for 2014. Supported for 2017 to 2018.

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 2019 to 2020, 2023 to 2024. Supported for 2026.

Estimated NO accumulation via fuel consumption RAM2500_ESTIMATED_NO

  • Request21 D8
  • Service 21PID D8
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 3624)
Range
0 to 18.08
Unit
Raw value

In testing for 2010 to 2020, 2022 to 2026. Not supported for 2021.

Fuel level RAM2500_FLI

  • Request21 A8
  • Service 21PID A8
  • Module7E0 → 7E8
  • Every30 s
  • Testing

Bits 96 to 111 of the reply, 16 bits.

Formula
(val ÷ 256)
Range
0 to 255 %
Unit
%

In testing for 2010 to 2020, 2022 to 2026. Not supported for 2021.

Fuel level average RAM2500_FLI_AVG

  • Request22 A0 43
  • Service 22DID A043
  • Module7E0 → 7E8
  • Every30 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
val
Range
0 to 255 %
Unit
%

In testing for 2010 to 2020, 2022 to 2026. Not supported for 2021.

Fuel level input RAM2500_FLI_INPUTConfirmed

Pelican can show this parameter as the fuel tank level.

  • Request22 02 27
  • Service 22DID 0227
  • Module7E0 → 7E8
  • Every30 s
  • Testing for 2010 to 2020, 2022 to 2026

Bits 0 to 7 of the reply, 8 bits.

Formula
val
Range
0 to 100 %
Unit
%

Confirmed for 2021. In testing for 2010 to 2020, 2022 to 2026.

Fuel mass correction, cylinder 1 RAM2500_FUEL_MASS_CORR_CYL_1

  • Request22 01 66
  • Service 22DID 0166
  • Module7E0 → 7E8
  • Every1 s
  • Testing for 2010 to 2020, 2022 to 2026

Bits 144 to 159 of the reply, 16 bits. The value is signed.

Formula
(val ÷ 100)
Range
-327.68 to 327.67
Unit
Number

In testing for 2010 to 2020, 2022 to 2026. Supported for 2021.

Fuel mass correction, cylinder 2 RAM2500_FUEL_MASS_CORR_CYL_2

  • Request22 01 66
  • Service 22DID 0166
  • Module7E0 → 7E8
  • Every1 s
  • Testing for 2010 to 2020, 2022 to 2026

Bits 160 to 175 of the reply, 16 bits. The value is signed.

Formula
(val ÷ 100)
Range
-327.68 to 327.67
Unit
Number

In testing for 2010 to 2020, 2022 to 2026. Supported for 2021.

Fuel mass correction, cylinder 3 RAM2500_FUEL_MASS_CORR_CYL_3

  • Request22 01 66
  • Service 22DID 0166
  • Module7E0 → 7E8
  • Every1 s
  • Testing for 2010 to 2020, 2022 to 2026

Bits 176 to 191 of the reply, 16 bits. The value is signed.

Formula
(val ÷ 100)
Range
-327.68 to 327.67
Unit
Number

In testing for 2010 to 2020, 2022 to 2026. Supported for 2021.

Fuel mass correction, cylinder 4 RAM2500_FUEL_MASS_CORR_CYL_4

  • Request22 01 66
  • Service 22DID 0166
  • Module7E0 → 7E8
  • Every1 s
  • Testing for 2010 to 2020, 2022 to 2026

Bits 192 to 207 of the reply, 16 bits. The value is signed.

Formula
(val ÷ 100)
Range
-327.68 to 327.67
Unit
Number

In testing for 2010 to 2020, 2022 to 2026. Supported for 2021.

Fuel mass correction, cylinder 5 RAM2500_FUEL_MASS_CORR_CYL_5

  • Request22 01 66
  • Service 22DID 0166
  • Module7E0 → 7E8
  • Every1 s
  • Testing for 2010 to 2020, 2022 to 2026

Bits 208 to 223 of the reply, 16 bits. The value is signed.

Formula
(val ÷ 100)
Range
-327.68 to 327.67
Unit
Number

In testing for 2010 to 2020, 2022 to 2026. Supported for 2021.

Fuel mass correction, cylinder 6 RAM2500_FUEL_MASS_CORR_CYL_6

  • Request22 01 66
  • Service 22DID 0166
  • Module7E0 → 7E8
  • Every1 s
  • Testing for 2010 to 2020, 2022 to 2026

Bits 224 to 239 of the reply, 16 bits. The value is signed.

Formula
(val ÷ 100)
Range
-327.68 to 327.67
Unit
Number

In testing for 2010 to 2020, 2022 to 2026. Supported for 2021.

Fuel mass, cylinder 1 RAM2500_FUEL_MASS_CYL_1Confirmed

  • Request22 02 55
  • Service 22DID 0255
  • Module7E0 → 7E8
  • Every1 s
  • Testing for 2010 to 2020, 2022 to 2026

Example reply from a 2021 Ram 2500.

Bits 0 to 15 of the reply, 16 bits.

0x02E8 = 744 → (744 ÷ 64) = 11.625

Formula
(val ÷ 64)
Range
0 to 1023.9843
Unit
Raw value

Confirmed for 2021. In testing for 2010 to 2020, 2022 to 2026.

Fuel mass, cylinder 2 RAM2500_FUEL_MASS_CYL_2Confirmed

  • Request22 02 56
  • Service 22DID 0256
  • Module7E0 → 7E8
  • Every1 s
  • Testing for 2010 to 2020, 2022 to 2026

Example reply from a 2021 Ram 2500.

Bits 0 to 15 of the reply, 16 bits.

0x02C5 = 709 → (709 ÷ 64) = 11.078125

Formula
(val ÷ 64)
Range
0 to 1023.9843
Unit
Raw value

Confirmed for 2021. In testing for 2010 to 2020, 2022 to 2026.

Fuel mass, cylinder 3 RAM2500_FUEL_MASS_CYL_3Confirmed

  • Request22 02 57
  • Service 22DID 0257
  • Module7E0 → 7E8
  • Every1 s
  • Testing for 2010 to 2020, 2022 to 2026

Example reply from a 2021 Ram 2500.

Bits 0 to 15 of the reply, 16 bits.

0x02C9 = 713 → (713 ÷ 64) = 11.140625

Formula
(val ÷ 64)
Range
0 to 1023.9843
Unit
Raw value

Confirmed for 2021. In testing for 2010 to 2020, 2022 to 2026.

Fuel mass, cylinder 4 RAM2500_FUEL_MASS_CYL_4Confirmed

  • Request22 02 58
  • Service 22DID 0258
  • Module7E0 → 7E8
  • Every1 s
  • Testing for 2010 to 2020, 2022 to 2026

Example reply from a 2021 Ram 2500.

Bits 0 to 15 of the reply, 16 bits.

0x02C0 = 704 → (704 ÷ 64) = 11

Formula
(val ÷ 64)
Range
0 to 1023.9843
Unit
Raw value

Confirmed for 2021. In testing for 2010 to 2020, 2022 to 2026.

Fuel pressure sensor, 1000's psi RAM2500_FUEL_P_SENS_1000_SConfirmed

  • Request21 B4
  • Service 21PID B4
  • Module7E0 → 7E8
  • Every5 s
  • Testing for 2010 to 2020, 2022 to 2026

Example reply from a 2021 Ram 2500.

Bits 0 to 15 of the reply, 16 bits.

0x0600 = 1536 → (1536 ÷ 552) = 2.782609 psi

Formula
(val ÷ 552)
Range
0 to 118 psi
Unit
psi

Confirmed for 2021. In testing for 2010 to 2020, 2022 to 2026.

Fuel rail pressure RAM2500_FUEL_RAIL_P

  • Request22 A0 67
  • Service 22DID A067
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 8 to 23 of the reply, 16 bits.

Formula
(val × 2)
Range
0 to 131070 bar
Unit
bar

In testing for 2010 to 2020, 2022 to 2026. Not supported for 2021.

Fuel rail pressure RAM2500_FUEL_RAIL_P_06F3

  • Request22 06 F3
  • Service 22DID 06F3
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 1000)
Range
0 to 65.535
Unit
Raw value

In testing for 2010 to 2020, 2022 to 2026. Not supported for 2021.

Fuel rail pressure RAM2500_FUEL_RAIL_P_2

  • Request22 02 A1
  • Service 22DID 02A1
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 24 to 31 of the reply, 8 bits.

Formula
(val × 29 ÷ 200)
Range
0 to 36.9749 psi
Unit
psi

In testing for 2010 to 2020, 2022 to 2026. Not supported for 2021.

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 2014, 2019 to 2020, 2023. Supported for 2026.

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 2014, 2019 to 2020, 2023. Supported for 2026.

Fuel rail pressure, target RAM2500_FUEL_RAIL_P_TGT

  • Request22 1D 89
  • Service 22DID 1D89
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 1000)
Range
0 to 65.535
Unit
Raw value

In testing for 2010 to 2020, 2022 to 2026. Not supported for 2021.

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 2014, 2019 to 2020, 2023. Supported for 2026.

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 2014, 2019 to 2020, 2023. Supported for 2026.

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 2016, 2024. Supported for 2017, 2019, 2021 to 2023.

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 2016, 2024. Supported for 2017, 2019, 2021 to 2023.

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 2014, 2016 to 2017, 2019 to 2020, 2022 to 2024. Supported for 2018, 2021, 2026.

Total fuel correction, cylinder 1 RAM2500_TOT_FUEL_CORR_CYL_1

  • Request22 38 00
  • Service 22DID 3800
  • Module7E0 → 7E8
  • Every1 s
  • Testing

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

Formula
(val ÷ 100)
Range
-327.68 to 327.67
Unit
Number

In testing for 2010 to 2020, 2022 to 2026. Not supported for 2021.

Total fuel correction, cylinder 2 RAM2500_TOT_FUEL_CORR_CYL_2

  • Request22 38 01
  • Service 22DID 3801
  • Module7E0 → 7E8
  • Every1 s
  • Testing

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

Formula
(val ÷ 100)
Range
-327.68 to 327.67
Unit
Number

In testing for 2010 to 2020, 2022 to 2026. Not supported for 2021.

Total fuel correction, cylinder 3 RAM2500_TOT_FUEL_CORR_CYL_3

  • Request22 38 02
  • Service 22DID 3802
  • Module7E0 → 7E8
  • Every1 s
  • Testing

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

Formula
(val ÷ 100)
Range
-327.68 to 327.67
Unit
Number

In testing for 2010 to 2020, 2022 to 2026. Not supported for 2021.

Total fuel correction, cylinder 4 RAM2500_TOT_FUEL_CORR_CYL_4

  • Request22 38 03
  • Service 22DID 3803
  • Module7E0 → 7E8
  • Every1 s
  • Testing

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

Formula
(val ÷ 100)
Range
-327.68 to 327.67
Unit
Number

In testing for 2010 to 2020, 2022 to 2026. Not supported for 2021.

Total fuel correction, cylinder 5 RAM2500_TOT_FUEL_CORR_CYL_5

  • Request22 38 04
  • Service 22DID 3804
  • Module7E0 → 7E8
  • Every1 s
  • Testing

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

Formula
(val ÷ 100)
Range
-327.68 to 327.67
Unit
Number

In testing for 2010 to 2020, 2022 to 2026. Not supported for 2021.

Total fuel correction, cylinder 6 RAM2500_TOT_FUEL_CORR_CYL_6

  • Request22 38 05
  • Service 22DID 3805
  • Module7E0 → 7E8
  • Every1 s
  • Testing

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

Formula
(val ÷ 100)
Range
-327.68 to 327.67
Unit
Number

In testing for 2010 to 2020, 2022 to 2026. Not supported for 2021.

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 2019 to 2020, 2023 to 2024. Supported for 2026.

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 2014, 2019 to 2020, 2023. Supported for 2026.

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 2014, 2019 to 2020, 2023. Supported for 2026.

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 2014, 2019 to 2020, 2023. Supported for 2026.

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 2014, 2019 to 2020, 2023. Supported for 2026.

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 2014, 2019 to 2020, 2023. Supported for 2026.

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 2014, 2019 to 2020, 2023. Supported for 2026.

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