Engine parameters
The Mercedes-Benz CLA-Class has 11 engine parameters.
● Confirmed◆ In testing○ Supported× Not supported
Barometric pressure BAROSAE J1979Confirmed
Normally obtained from one of a dedicated barometric sensor, a MAP sensor at key-on and during certain modes of driving, or inferred from a MAF sensor and other inputs during certain modes of driving. The control module reports BARO from whatever source it is derived from.
- Request
01 33 - Service 01
PID 33 - Module
7E0 → 7E8 - Every
250 ms
Bits 0 to 7 of the reply, 8 bits.
- Formula
val- Range
- 0 to 255 kPa
- Unit
- kPa
Confirmed for 2018.
Calculated engine load LOAD_PCTSAE J1979Confirmed
Represents the amount of work the engine is doing. Expected to reach 100% at wide open throttle/wide open pedal at any altitude, temperature or rpm for both naturally aspirated and boosted engines. If engine load is limited for powertrain protection e.g. engine/turbocharger protection, this value may not reach 100%. For hybrid vehicles, indicates the torque produced only by the internal combustion engine, not the torque being delivered by the entire powertrain. For electric vehicles, the meaning of this parameter is undefined.
Pelican can show this parameter as the engine load.
- Request
01 04 - Service 01
PID 04 - Module
7E0 → 7E8 - Every
250 ms
Bits 0 to 7 of the reply, 8 bits.
- Formula
(val × 100 ÷ 255)- Range
- 0 to 100 %
- Unit
- %
Confirmed for 2018. Supported for 2014.
Catalyst temperature bank 1, sensor 1 CATEMP11SAE J1979Confirmed
- Request
01 3C - Service 01
PID 3C - Module
7E0 → 7E8 - Every
250 ms
Bits 0 to 15 of the reply, 16 bits.
- Formula
(val ÷ 10 − 40)- Range
- -40 to 6513.5 °C
- Unit
- °C
Confirmed for 2018.
Commanded equivalence ratio EQ_RATSAE J1979Confirmed
Fuel systems that utilize conventional oxygen sensor display the inverse of the commanded open loop equivalence ratio (also known as lambda) while the fuel control system is in open loop. Will indicate 1.000 while in closed-loop fuel.
Pelican can show this parameter as the commanded lambda.
- Request
01 44 - Service 01
PID 44 - Module
7E0 → 7E8 - Every
250 ms
Bits 0 to 15 of the reply, 16 bits.
- Formula
(val × 2 ÷ 65535)- Range
- 0 to 1.99
- Unit
- Number
Confirmed for 2018.
Distance to next service MERCEDES_SERVICE_DISTConfirmed
- Request
22 65 04 - Service 22
DID 6504 - Module
7E5 - Every
1 s - Testing
Example reply from a 2018 Mercedes-Benz CLA-Class.
Bits 0 to 15 of the reply, 16 bits.
0x0000 = 0 → 0 km
- Formula
val- Range
- 0 to 65535 km
- Unit
- km
Confirmed for 2018. In testing for 2013 to 2017, 2019 to 2026.
Engine coolant temperature ECTSAE J1979Confirmed
Your engine temperature must operate within a certain temperature range to operate efficiently and safely. If it runs too hot, then your engine could be permanently damaged. If it runs too cold, then your engine will use more fuel than necessary.
Pelican can show this parameter as the engine coolant temperature.
- Request
01 05 - Service 01
PID 05 - Module
7E0 → 7E8 - Every
500 ms
Bits 0 to 7 of the reply, 8 bits.
- Formula
(val − 40)- Range
- -40 to 215 °C
- Unit
- °C
Confirmed for 2018. Supported for 2014.
Master break cylinder pressure MERCEDES_MASTER_BREAK_CYLINDER_PRESSURE
- Request
22 20 02 - Service 22
DID 2002 - Module
7E2 → 7EA - Every
250 ms - Testing
Bits 96 to 111 of the reply, 16 bits. The value is signed.
- Formula
(val × 153 ÷ 10000)- Range
- -500 to 500 bar
- Unit
- bar
In testing for 2013 to 2017, 2019 to 2026. Not supported for 2018.
Short term fuel trim (bank 1) SHRTFT1SAE J1979Confirmed
Correction being used by the closed-loop fuel algorithm.
Pelican can show this parameter as the short term fuel trim.
- Request
01 06 - Service 01
PID 06 - Module
7E0 → 7E8 - Every
250 ms
Bits 0 to 7 of the reply, 8 bits.
- Formula
(val × 100 ÷ 128 − 100)- Range
- -100 to 99.2 %
- Unit
- %
Confirmed for 2018.
Vacuum break pressure MERCEDES_VACUUM_BREAK_PRESSURE
- Request
22 20 02 - Service 22
DID 2002 - Module
7E2 → 7EA - Every
250 ms - Testing
Bits 144 to 159 of the reply, 16 bits.
- Formula
(val ÷ 1000)- Range
- 0 to 65 bar
- Unit
- bar
In testing for 2013 to 2017, 2019 to 2026. Not supported for 2018.
Engine › OxygenSensors
Lambda value, Equivalence Ratio Bank 1, Sensor 1 LAMBDA11_CURRENTSAE J1979Confirmed
Pelican can show this parameter as the O2 lambda.
- Request
01 34 - Service 01
PID 34 - Module
7E0 → 7E8 - Every
250 ms
Bits 0 to 15 of the reply, 16 bits.
- Formula
(val ÷ 32768)- Range
- 0 to 1.99
- Unit
- Number
Confirmed for 2018.
Wide Range O2S Current, O2 Sensor Bank 1, Sensor 1 O2S11_CURRENTSAE J1979Confirmed
- Request
01 34 - Service 01
PID 34 - Module
7E0 → 7E8 - Every
250 ms
Bits 16 to 31 of the reply, 16 bits.
- Formula
(val ÷ 256 − 128)- Range
- -128 to 127.996 mA
- Unit
- mA
Confirmed for 2018.
