Battery parameters
The Ram 2500 has 15 battery parameters.
● Confirmed◆ In testing○ Supported× Not supported
Battery temperature RAM2500_BAT_T
- Request
21 23 - Service 21
PID 23 - Module
7E0 → 7E8 - Every
5 s - Testing
Bits 48 to 63 of the reply, 16 bits.
- Formula
(val ÷ 64)- Range
- 0 to 1023 °F
- Unit
- °F
In testing for 2010 to 2020, 2022 to 2026. Not supported for 2021.
Battery voltage RAM2500_BATT_V_ECU
- Request
22 19 55 - Service 22
DID 1955 - Module
DA10 → 10 - Every
30 s - Testing
Bits 0 to 15 of the reply, 16 bits.
- Formula
(val ÷ 2000)- Range
- 0 to 20 V
- Unit
- V
In testing for 2010 to 2013, 2015, 2017 to 2018, 2020, 2025. Not supported for 2014, 2016, 2019, 2021 to 2024, 2026.
Battery voltage, BCM RAM2500_BATT_V_BCMConfirmed
- Request
22 10 04 - Service 22
DID 1004 - Module
DA40 → 40 - Every
30 s - Testing for 2010 to 2025
Bits 0 to 7 of the reply, 8 bits.
- Formula
(val ÷ 10)- Range
- 0 to 25 V
- Unit
- V
Confirmed for 2026. In testing for 2010 to 2013, 2015, 2017 to 2018, 2020, 2025. Not supported for 2014, 2016, 2019, 2021 to 2024.
Charge air cooler outlet temperature RAM2500_CHG_AIR_COOLER_TConfirmed
- Request
21 B4 - Service 21
PID B4 - Module
7E0 → 7E8 - Every
5 s - Testing for 2010 to 2020, 2022 to 2026
Example reply from a 2021 Ram 2500.
Bits 96 to 111 of the reply, 16 bits.
0x037C = 892 → (892 × 9 ÷ 320 + 32) = 57.0875 °F
- Formula
(val × 9 ÷ 320 + 32)- Range
- 0 to 1875 °F
- Unit
- °F
Confirmed for 2021. In testing for 2010 to 2020, 2022 to 2026.
Charge air temperature RAM2500_CHG_AIR_TConfirmed
- Request
22 12 50 - Service 22
DID 1250 - Module
7E0 → 7E8 - Every
5 s - Testing for 2010 to 2020, 2022 to 2026
Example reply from a 2021 Ram 2500.
Bits 0 to 7 of the reply, 8 bits.
0x78 = 120 → (120 × 9 ÷ 5 − 83) = 133 °F
- Formula
(val × 9 ÷ 5 − 83)- Range
- -83 to 376 °F
- Unit
- °F
Confirmed for 2021. In testing for 2010 to 2020, 2022 to 2026.
Charge pressure RAM2500_CHG_PConfirmed
- Request
21 B2 - Service 21
PID B2 - Module
7E0 → 7E8 - Every
5 s - Testing for 2010 to 2020, 2022 to 2026
Bits 160 to 175 of the reply, 16 bits.
- Formula
(val ÷ 221)- Range
- 0 to 296 psi
- Unit
- psi
Confirmed for 2021. In testing for 2010 to 2020, 2022 to 2026.
Charge temperature RAM2500_CHG_TConfirmed
- Request
21 B2 - Service 21
PID B2 - Module
7E0 → 7E8 - Every
5 s - Testing for 2010 to 2020, 2022 to 2026
Bits 144 to 159 of the reply, 16 bits.
- Formula
(val × 10 ÷ 711 + 32)- Range
- 0 to 953 °F
- Unit
- °F
Confirmed for 2021. In testing for 2010 to 2020, 2022 to 2026.
Charged air cooler outlet temperature RAM2500_CHARGED_AIR_COOLER_T
- Request
22 A0 EE - Service 22
DID A0EE - Module
7E0 → 7E8 - Every
5 s - Testing
Bits 16 to 31 of the reply, 16 bits.
- Formula
(val × 36 ÷ 125 + 32)- Range
- 0 to 18906 °F
- Unit
- °F
In testing for 2010 to 2020, 2022 to 2026. Not supported for 2021.
Control module voltage VPWRSAE J1979Confirmed
Power input to the OBD control module. VPWR is normally battery voltage, less any voltage drop in the circuit between the battery and the control module.
Pelican can show this parameter as the starter battery voltage.
- Request
01 42 - Service 01
PID 42 - Module
7E0 → 7E8 - Every
10 s
Bits 0 to 15 of the reply, 16 bits.
- Formula
(val ÷ 1000)- Range
- 0 to 65535 V
- Unit
- V
Confirmed for 2014, 2020, 2023 to 2024. Supported for 2017 to 2019, 2022, 2026.
Low temperature/charge air coolant pump speed RAM2500_LOW_T_CHG_AIR_CLTConfirmed
- Request
22 15 D4 - Service 22
DID 15D4 - Module
7E0 → 7E8 - Every
5 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.
0x0000 = 0 → 0 rpm
- Formula
val- Range
- 0 to 65535 rpm
- Unit
- rpm
Confirmed for 2021. In testing for 2010 to 2020, 2022 to 2026.
Required fuel charge, cylinder 1 RAM2500_REQUIRED_FUEL_CHG_1Confirmed
- Request
22 02 B2 - Service 22
DID 02B2 - Module
7E0 → 7E8 - Every
1 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.
0x02D7 = 727 → (727 ÷ 64) = 11.359375
- Formula
(val ÷ 64)- Range
- 0 to 1023.9843
- Unit
- Raw value
Confirmed for 2021. In testing for 2010 to 2020, 2022 to 2026.
Required fuel charge, cylinder 2 RAM2500_REQUIRED_FUEL_CHG_2Confirmed
- Request
22 02 B3 - Service 22
DID 02B3 - Module
7E0 → 7E8 - Every
1 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.
0x02CC = 716 → (716 ÷ 64) = 11.1875
- Formula
(val ÷ 64)- Range
- 0 to 1023.9843
- Unit
- Raw value
Confirmed for 2021. In testing for 2010 to 2020, 2022 to 2026.
Required fuel charge, cylinder 3 RAM2500_REQUIRED_FUEL_CHG_3Confirmed
- Request
22 02 B4 - Service 22
DID 02B4 - Module
7E0 → 7E8 - Every
1 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.
0x02DB = 731 → (731 ÷ 64) = 11.421875
- Formula
(val ÷ 64)- Range
- 0 to 1023.9843
- Unit
- Raw value
Confirmed for 2021. In testing for 2010 to 2020, 2022 to 2026.
Required fuel charge, cylinder 4 RAM2500_REQUIRED_FUEL_CHG_4Confirmed
- Request
22 02 B5 - Service 22
DID 02B5 - Module
7E0 → 7E8 - Every
1 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.
Turbocharger speed RAM2500_TURBOCHARGER_SPD
- Request
22 A0 E4 - Service 22
DID A0E4 - Module
7E0 → 7E8 - Every
250 ms - Testing
Bits 16 to 31 of the reply, 16 bits.
- Formula
(val × 125 ÷ 16)- Range
- 0 to 511992 rpm
- Unit
- rpm
In testing for 2010 to 2020, 2022 to 2026. Not supported for 2021.
