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Ram 3500

Transmission parameters

The Ram 3500 has 32 transmission parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Transmission temperature RAM3500_ATF_T_2Confirmed

  • Request22 04 FE
  • Service 22DID 04FE
  • Module7E1 → 7E9
  • Every1 s
  • Testing for 2010 to 2023

Example reply from a 2024 Ram 3500.

Bits 0 to 7 of the reply, 8 bits.

0x55 = 85 → (85 × 1.8 − 40) = 113 °F

Formula
(val × 1.8 − 40)
Range
-30 to 300 °F
Unit
°F

Confirmed for 2024. In testing for 2010 to 2016, 2018 to 2020, 2022 to 2023. Not supported for 2017, 2021, 2025.

  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.

Automatic transmission temperature RAM3500_ATF_T_3

Pelican can show this parameter as the transmission fluid temperature.

  • Request22 1D 09
  • Service 22DID 1D09
  • ModuleDA18
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val − 50)
Range
-50 to 205 °C
Unit
°C

In testing for 2026. Not supported for 2025.

Current gear RAM3500_CURRENT_GEAR

  • Request22 3C 22
  • Service 22DID 3C22
  • Module7E1 → 7E9
  • Every250 ms
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val ÷ 10)
Range
0 to 25.5
Unit
Number

In testing for 2010 to 2023. Not supported for 2024 to 2025.

Current gear RAM3500_GEAR_2

The automatic transmission gear.

  • Request22 55 03
  • Service 22DID 5503
  • Module7E1 → 7E9
  • Every1 s
  • Testing

Bits 4 to 7 of the reply, 4 bits.

Unit
Named states
States
Raw valueStateMeaning
0NEUTRALNeutral
11First gear
22Second gear
33Third gear
44Fourth gear
55Fifth gear
66Sixth gear
77Seventh gear
88Eighth gear
99Ninth gear
1010Tenth gear
11REARRear
13PARKPark

In testing for 2010 to 2016, 2018 to 2023. Not supported for 2017, 2024 to 2025.

Current gear RAM3500_GEAR_CURRENTConfirmed

  • Request22 05 1A
  • Service 22DID 051A
  • ModuleDA18 → 18
  • Every500 ms
  • Testing for 2026

Bits 4 to 7 of the reply, 4 bits.

Formula
val
Range
0 to 15
Unit
Number

Confirmed for 2025. In testing for 2026.

Desired gear RAM3500_GEAR_DESIREDConfirmed

  • Request22 05 1A
  • Service 22DID 051A
  • ModuleDA18 → 18
  • Every500 ms
  • Testing for 2026

Bits 0 to 3 of the reply, 4 bits.

Formula
val
Range
0 to 15
Unit
Number

Confirmed for 2025. In testing for 2026.

Gear RAM3500_GEAR_3

  • Request22 1D 12
  • Service 22DID 1D12
  • ModuleDA18
  • 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 2025.

Gear engaged RAM3500_GEAR_ECU

  • Request22 19 2D
  • Service 22DID 192D
  • ModuleDA10 → 10
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
val
Range
0 to 9
Unit
Number

In testing for 2026. Not supported for 2025.

Gearbox output speed RAM3500_GEARBOX_RPM

  • Request22 21 02
  • Service 22DID 2102
  • ModuleDA18 → 18
  • Every1 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 4)
Range
0 to 16383 rpm
Unit
rpm

In testing for 2026. Not supported for 2025.

Target gear RAM3500_GEAR_TARGET

The target gear.

  • Request22 55 04
  • Service 22DID 5504
  • Module7E1 → 7E9
  • Every1 s
  • Testing

Bits 4 to 7 of the reply, 4 bits.

Unit
Named states
States
Raw valueStateMeaning
0NEUTRALNeutral
11First gear
22Second gear
33Third gear
44Fourth gear
55Fifth gear
66Sixth gear
77Seventh gear
88Eighth gear
99Ninth gear
1010Tenth gear
11REARRear
13PARKPark

In testing for 2010 to 2016, 2018 to 2023. Not supported for 2017, 2024 to 2025.

Torque converter lock status RAM3500_TQ_CONV_LOCK

  • Request22 B0 9B
  • Service 22DID B09B
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
val
Range
0 to 255
Unit
Number

In testing for 2010 to 2023. Not supported for 2024 to 2025.

Torque converter slip, variant 1 RAM3500_TQ_CONV_SLIP_VAR_1

  • Request22 B0 28
  • Service 22DID B028
  • Module7E0 → 7E8
  • Every250 ms
  • Testing

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

Formula
(val × 9 ÷ 640)
Range
-460 to 460 rpm
Unit
rpm

In testing for 2010 to 2023. Not supported for 2024 to 2025.

Torque converter slip, variant 2 RAM3500_TQ_CONV_SLIP_VAR_2

  • Request22 A0 01
  • Service 22DID A001
  • Module7E0 → 7E8
  • Every250 ms
  • Testing

Bits 48 to 63 of the reply, 16 bits. The value is signed.

Formula
val
Range
-32768 to 32767 rpm
Unit
rpm

In testing for 2010 to 2023. Not supported for 2024 to 2025.

Transmission fluid temperature RAM3500_ATF_T

  • Request21 72
  • Service 21PID 72
  • Module7E1 → 7E9
  • Every5 s
  • Testing

Bits 32 to 47 of the reply, 16 bits.

Formula
(val ÷ 64)
Range
0 to 1023 °F
Unit
°F

In testing for 2010 to 2023. Not supported for 2024 to 2025.

Transmission fluid temperature RAM3500_ATF_T_08DF

Pelican can show this parameter as the transmission fluid temperature.

  • Request22 08 DF
  • Service 22DID 08DF
  • Module7E1 → 7E9
  • Every5 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

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

In testing for 2010 to 2023. Not supported for 2024 to 2025.

Transmission fluid temperature v.2 RAM3500_ATF_T_V_2

  • Request21 18
  • Service 21PID 18
  • Module7E0 → 7E8
  • Every5 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 64)
Range
0 to 1023 °F
Unit
°F

In testing for 2010 to 2023. Not supported for 2024 to 2025.

Transmission fluid temperature, variant 1 RAM3500_ATF_T_VAR_1

  • Request22 B0 10
  • Service 22DID B010
  • Module7E0 → 7E8
  • Every5 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 64)
Range
0 to 1023 °F
Unit
°F

In testing for 2010 to 2023. Not supported for 2024 to 2025.

Transmission fluid temperature, variant 2 RAM3500_ATF_T_VAR_2

  • Request22 A0 02
  • Service 22DID A002
  • Module7E0 → 7E8
  • Every5 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 9 ÷ 5 − 58)
Range
-58 to 401 °F
Unit
°F

In testing for 2010 to 2023. Not supported for 2024.

Transmission fluid temperature, variant 3 RAM3500_ATF_T_2130

  • Request21 30
  • Service 21PID 30
  • Module7E1 → 7E9
  • Every5 s
  • Testing

Bits 88 to 95 of the reply, 8 bits.

Formula
(val − 50)
Range
-50 to 205 °C
Unit
°C

In testing for 2010 to 2023. Not supported for 2024 to 2025.

Transmission gear, actual RAM3500_GEAR

  • Request22 A0 A0
  • Service 22DID A0A0
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
val
Range
0 to 255
Unit
Number

In testing for 2010 to 2023. Not supported for 2024 to 2025.

Transmission gear, commanded RAM3500_GEAR_CMD

  • Request22 A0 9F
  • Service 22DID A09F
  • Module7E0 → 7E8
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
val
Range
0 to 255
Unit
Number

In testing for 2010 to 2023. Not supported for 2024 to 2025.

Transmission input speed RAM3500_AT_INPUT_RPM

  • Request22 1D 08
  • Service 22DID 1D08
  • ModuleDA18
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 25)
Range
0 to 6375 rpm
Unit
rpm

In testing for 2026. Not supported for 2025.

Transmission oil temperature RAM3500_TOT

Pelican can show this parameter as the transmission fluid temperature.

  • Request21 18
  • Service 21PID 18
  • ModuleDA10 → 10
  • Every1 s
  • Testing

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

Formula
(val ÷ 4)
Range
-512 to 512 °F
Unit
°F

In testing for 2026. Not supported for 2025.

Transmission output speed RAM3500_AT_OUTPUT_RPM

  • Request22 1D 07
  • Service 22DID 1D07
  • ModuleDA18
  • Every1 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
(val × 25)
Range
0 to 6375 rpm
Unit
rpm

In testing for 2026. Not supported for 2025.

Transmission reported torque RAM3500_TCM_TORQUEConfirmed

  • Request22 10 18
  • Service 22DID 1018
  • ModuleDA18 → 18
  • Every2 s
  • Testing for 2026

Bits 0 to 15 of the reply, 16 bits.

Formula
(val − 500)
Range
-500 to 2000 N·m
Unit
N·m

Confirmed for 2025. In testing for 2026.

Transmission sump temperature RAM3500_TRANS_SUMP_T

  • Request22 A0 A3
  • Service 22DID A0A3
  • Module7E0 → 7E8
  • Every5 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 9 ÷ 640)
Range
0 to 921 °F
Unit
°F

In testing for 2010 to 2023. Not supported for 2024 to 2025.

Transmission sump temperature RAM3500_TRANS_SUMP_T_7E1

  • Request21 3A
  • Service 21PID 3A
  • Module7E1 → 7E9
  • Every5 s
  • Testing

Bits 72 to 87 of the reply, 16 bits.

Formula
(val ÷ 64)
Range
0 to 1023 °F
Unit
°F

In testing for 2010 to 2023. Not supported for 2024.

Transmission sump temperature, variant 1 RAM3500_TRANS_SUMP_T_VAR_1

  • Request21 3A
  • Service 21PID 3A
  • Module7E0 → 7E8
  • Every5 s
  • Testing

Bits 80 to 87 of the reply, 8 bits.

Formula
(val × 4)
Range
0 to 1020 °F
Unit
°F

In testing for 2010 to 2023. Not supported for 2024 to 2025.

Transmission sump temperature, variant 2 RAM3500_TRANS_SUMP_T_VAR_2

  • Request21 CA
  • Service 21PID CA
  • Module7E0 → 7E8
  • Every5 s
  • Testing

Bits 80 to 87 of the reply, 8 bits.

Formula
(val × 4)
Range
0 to 1020 °F
Unit
°F

In testing for 2010 to 2023. Not supported for 2024.

Transmission temperature RAM3500_ATF_T_2Confirmed

  • Request22 04 FE
  • Service 22DID 04FE
  • Module7E1 → 7E9
  • Every1 s
  • Testing for 2010 to 2023

Example reply from a 2024 Ram 3500.

Bits 0 to 7 of the reply, 8 bits.

0x55 = 85 → (85 × 1.8 − 40) = 113 °F

Formula
(val × 1.8 − 40)
Range
-30 to 300 °F
Unit
°F

Confirmed for 2024. In testing for 2010 to 2016, 2018 to 2020, 2022 to 2023. Not supported for 2017, 2021, 2025.

Transmission torque converter temperature RAM3500_TRANS_TQ_CONV_T

  • Request22 A0 A4
  • Service 22DID A0A4
  • Module7E0 → 7E8
  • Every5 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 9 ÷ 320)
Range
0 to 1843 °F
Unit
°F

In testing for 2010 to 2023. Not supported for 2024 to 2025.

Transmission torque converter temperature, variant 1 RAM3500_TRANS_TQ_CONV_T_VAR_1

  • Request21 3A
  • Service 21PID 3A
  • Module7E0 → 7E8
  • Every5 s
  • Testing

Bits 96 to 111 of the reply, 16 bits.

Formula
(val × 9 ÷ 320 + 32)
Range
0 to 1875 °F
Unit
°F

In testing for 2010 to 2023. Not supported for 2024 to 2025.

Transmission torque converter temperature, variant 2 RAM3500_TRANS_TQ_CONV_T_VAR_2

  • Request21 CA
  • Service 21PID CA
  • Module7E0 → 7E8
  • Every5 s
  • Testing

Bits 96 to 111 of the reply, 16 bits.

Formula
(val × 9 ÷ 320 + 32)
Range
0 to 1875 °F
Unit
°F

In testing for 2010 to 2023. Not supported for 2024.

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