DTC parameters

The SAE J1979 standard has 54 DTC parameters.

Distance traveled since diagnostic trouble codes cleared `CLR_DIST`

Distance accumulated since DTCs were cleared (via an external test equipment or possibly, a battery disconnect). This parameter is not associated with any particular DTC. It is simply an indication for inspection/maintenance, of the last time an external test equipment was used to clear DTCs. If greater than 65,535 km have occurred, will remain at 65,535 km and not wrap to zero.

Pelican can show this parameter as the distance since trouble codes were cleared.

Request01 31
Service 01PID 31
Module7E0 → 7E8
Every15 s

Bits 0 to 15 of the reply, 16 bits.

Formula: val
Range: 0 to 65535 km
Unit: km

Distance traveled while MIL was activated `MIL_DIST`

Resets to zero when MIL changes from deactivated to activated, if diagnostic information is cleared, or if at least 40 warm-up cycles occur without MIL being activated.

Request01 21
Service 01PID 21
Module7E0 → 7E8
Every5 s

Bits 0 to 15 of the reply, 16 bits.

Formula: val
Range: 0 to 65535 km
Unit: km

DTC that caused required freeze frame data storage `DTCFRZF`

0 indicates no freeze frame data.

Request01 02
Service 01PID 02
Module7E0 → 7E8
Every60 s

Bits 0 to 15 of the reply, 16 bits.

Formula: val
Range: 0 to 65535
Unit: Hexadecimal

Engine run time since diagnostic trouble codes cleared `CLR_TIME`

Time accumulated since DTCs were cleared (via an external test equipment or possibly, a battery disconnect). This parameter is not associated with any particular DTC. It is simply an indication for inspection/maintenance, of the last time an external test equipment was used to clear DTCs. If greater than 65,535 km have occurred, will remain at 65,535 minutes and not wrap to zero.

Request01 4E
Service 01PID 4E
Module7E0 → 7E8
Every60 s

Bits 0 to 15 of the reply, 16 bits.

Formula: val
Range: 0 to 65535 min
Unit: min

Malfunction indicator lamp `MIL`

The MIL status is OFF during key-on, engine-off bulb check unless MIL has also been commanded ON for a detected malfunction. The status reflects whether there are confirmed DTC(s) stored that are illuminating the MIL. It should not reflect the status of the MIL, which could be on for a function check, flashing I/M readiness or flashing for misfire.

Pelican can show this parameter as the checkEngineLightOn.

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 0 of the reply.

Formula: val
Range: 0 to 1
Unit: Off or on

Number of DTCs stored in this ECU `DTC_CNT`

Number of confirmed emission-related DTCs stored in the ECU available for display using Service $03.

Pelican can show this parameter as the storedDTCCount.

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bits 1 to 7 of the reply, 7 bits.

Formula: val
Range: 0 to 127
Unit: Number

Number of warm-ups since diagnostic trouble codes cleared `WARM_UPS`

Number of OBD warm-up cycles since all DTCs were cleared (via an external test equipment or possibly, a battery disconnect). A warm-up is defined in the OBD regulations to be sufficient vehicle operation such that coolant temperature rises by at least 22°C (40°F) from engine starting and reaches a minimum temperature of 70°C (160°F) (60°C (140°F) for diesels). This PID is not associated with any particular DTC. It is simply an indication for inspection/maintenance, of the last time an external test equipment was used to clear DTCs. If greater than 255 warm-ups have occurred, this parameter will remain at 255 and not wrap to zero.

Request01 30
Service 01PID 30
Module7E0 → 7E8
Every60 s

Bits 0 to 7 of the reply, 8 bits.

Formula: val
Range: 0 to 255
Unit: Number

Time run by the engine while MIL was activated `MIL_TIME`

Resets to zero when MIL changes from deactivated to activated, if diagnostic information is cleared, or if at least 40 warm-up cycles occur without MIL being activated.

Request01 4D
Service 01PID 4D
Module7E0 → 7E8
Every60 s

Bits 0 to 15 of the reply, 16 bits.

Formula: val
Range: 0 to 65535 min
Unit: min

DTCs › Status

A/C system refrigerant monitoring `ACRF_ENA`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 19 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

A/C system refrigerant monitoring completed `ACRFCMPL`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 27 of the reply.

Formula: val
Range: 0 to 1
Unit: Yes or no

A/C system refrigerant monitoring ready `ACRF_RDY`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 27 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Catalyst monitoring `CAT_ENA`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 23 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Catalyst monitoring completed `CAT_CMPL`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 31 of the reply.

Formula: val
Range: 0 to 1
Unit: Yes or no

Catalyst monitoring ready `CAT_RDY`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 31 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Comprehensive component monitoring completed `CCM_CMPL`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 9 of the reply.

Formula: val
Range: 0 to 1
Unit: Yes or no

Comprehensive component monitoring ready `CCM_RDY`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 9 of the reply.

Formula: val
Range: 0 to 1
Unit: Yes or no

EGR system monitoring `EGR_ENA`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 16 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

EGR system monitoring completed `EGR_CMPL`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 24 of the reply.

Formula: val
Range: 0 to 1
Unit: Yes or no

EGR system monitoring ready `EGR_RDY`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 24 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Evaporative system monitoring `EVAP_ENA`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 21 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Evaporative system monitoring completed `EVAPCMPL`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 29 of the reply.

Formula: val
Range: 0 to 1
Unit: Yes or no

Evaporative system monitoring ready `EVAP_RDY`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 29 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Fuel system monitoring completed `FUEL_CMPL`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 10 of the reply.

Formula: val
Range: 0 to 1
Unit: Yes or no

Fuel system monitoring ready `FUEL_RDY`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 10 of the reply.

Formula: val
Range: 0 to 1
Unit: Yes or no

Heated catalyst monitoring `HCAT_ENA`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 22 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Heated catalyst monitoring completed `HCATCMPL`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 30 of the reply.

Formula: val
Range: 0 to 1
Unit: Yes or no

Heated catalyst monitoring ready `HCAT_RDY`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 30 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Misfire monitoring completed `MIS_CMPL`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 11 of the reply.

Formula: val
Range: 0 to 1
Unit: Yes or no

Misfire monitoring ready `MIS_RDY`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 11 of the reply.

Formula: val
Range: 0 to 1
Unit: Yes or no

Oxygen sensor heater monitoring `HTR_ENA`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 17 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Oxygen sensor heater monitoring completed `HTR_CMPL`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 25 of the reply.

Formula: val
Range: 0 to 1
Unit: Yes or no

Oxygen sensor heater monitoring ready `HTR_RDY`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 25 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Oxygen sensor monitoring `O2S_ENA`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 18 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Oxygen sensor monitoring completed `O2S_CMPL`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 26 of the reply.

Formula: val
Range: 0 to 1
Unit: Yes or no

Oxygen sensor monitoring ready `O2S_RDY`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 26 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Secondary air system monitoring `AIR_ENA`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 20 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Secondary air system monitoring completed `AIR_CMPL`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 28 of the reply.

Formula: val
Range: 0 to 1
Unit: Yes or no

Secondary air system monitoring ready `AIR_RDY`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 28 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

DTCs › Support

A/C system refrigerant monitoring supported `ACRF_SUP`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 19 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Catalyst monitoring supported `CAT_SUP`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 23 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Comprehensive component monitoring enabled `CCM_ENA`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 13 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Comprehensive component monitoring supported `CCM_SUP`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 13 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Compression ignition monitoring supported `CIM_SUP`

Indicates support of spark ignition or compression ignition monitors.

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 12 of the reply.

Unit: Named states

States
Raw value	State	Meaning
`0`	`SPARK`	Spark ignition monitors supported
`1`	`COMPRESSION`	Compression ignition monitors supported

Compression ignition monitoring supported `CIM_SUP_FLAG`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 12 of the reply.

Unit: Named states

States
Raw value	State	Meaning
`0`	`SPARK`	Spark ignition monitors supported
`1`	`COMPRESSION`	Compression ignition monitors supported

EGR system monitoring supported `EGR_SUP`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 16 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Evaporative system monitoring supported `EVAP_SUP`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 21 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Fuel system monitoring enabled `FUEL_ENA`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 14 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Fuel system monitoring supported `FUEL_SUP`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 14 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Heated catalyst monitoring supported `HCAT_SUP`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 22 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Misfire monitoring enabled `MIS_ENA`

Request01 41
Service 01PID 41
Module7E0 → 7E8
Every1 s

Bit 15 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Misfire monitoring supported `MIS_SUP`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 15 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Oxygen sensor heater monitoring supported `HTR_SUP`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 17 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Oxygen sensor monitoring supported `O2S_SUP`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 18 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

Secondary air system monitoring supported `AIR_SUP`

Request01 01
Service 01PID 01
Module7E0 → 7E8
Every10 s

Bit 20 of the reply.

Formula: val
Range: 0 to 1
Unit: No or yes

DTC parameters

Distance traveled since diagnostic trouble codes cleared CLR_DIST

Distance traveled while MIL was activated MIL_DIST

DTC that caused required freeze frame data storage DTCFRZF

Engine run time since diagnostic trouble codes cleared CLR_TIME

Malfunction indicator lamp MIL

Number of DTCs stored in this ECU DTC_CNT

Number of warm-ups since diagnostic trouble codes cleared WARM_UPS

Time run by the engine while MIL was activated MIL_TIME

DTCs › Status

A/C system refrigerant monitoring ACRF_ENA

A/C system refrigerant monitoring completed ACRFCMPL

A/C system refrigerant monitoring ready ACRF_RDY

Catalyst monitoring CAT_ENA

Catalyst monitoring completed CAT_CMPL

Catalyst monitoring ready CAT_RDY

Comprehensive component monitoring completed CCM_CMPL

Comprehensive component monitoring ready CCM_RDY

EGR system monitoring EGR_ENA

EGR system monitoring completed EGR_CMPL

EGR system monitoring ready EGR_RDY

Evaporative system monitoring EVAP_ENA

Evaporative system monitoring completed EVAPCMPL

Evaporative system monitoring ready EVAP_RDY

Fuel system monitoring completed FUEL_CMPL

Fuel system monitoring ready FUEL_RDY

Heated catalyst monitoring HCAT_ENA

Heated catalyst monitoring completed HCATCMPL

Heated catalyst monitoring ready HCAT_RDY

Misfire monitoring completed MIS_CMPL

Misfire monitoring ready MIS_RDY

Oxygen sensor heater monitoring HTR_ENA

Oxygen sensor heater monitoring completed HTR_CMPL

Oxygen sensor heater monitoring ready HTR_RDY

Oxygen sensor monitoring O2S_ENA

Oxygen sensor monitoring completed O2S_CMPL

Oxygen sensor monitoring ready O2S_RDY

Secondary air system monitoring AIR_ENA

Secondary air system monitoring completed AIR_CMPL

Secondary air system monitoring ready AIR_RDY

DTCs › Support

A/C system refrigerant monitoring supported ACRF_SUP

Catalyst monitoring supported CAT_SUP

Comprehensive component monitoring enabled CCM_ENA

Comprehensive component monitoring supported CCM_SUP

Compression ignition monitoring supported CIM_SUP

Compression ignition monitoring supported CIM_SUP_FLAG

EGR system monitoring supported EGR_SUP

Evaporative system monitoring supported EVAP_SUP

Fuel system monitoring enabled FUEL_ENA

Fuel system monitoring supported FUEL_SUP

Heated catalyst monitoring supported HCAT_SUP

Misfire monitoring enabled MIS_ENA

Misfire monitoring supported MIS_SUP

Oxygen sensor heater monitoring supported HTR_SUP

Oxygen sensor monitoring supported O2S_SUP

Secondary air system monitoring supported AIR_SUP

Start your test drive today.

Distance traveled since diagnostic trouble codes cleared `CLR_DIST`

Distance traveled while MIL was activated `MIL_DIST`

DTC that caused required freeze frame data storage `DTCFRZF`

Engine run time since diagnostic trouble codes cleared `CLR_TIME`

Malfunction indicator lamp `MIL`

Number of DTCs stored in this ECU `DTC_CNT`

Number of warm-ups since diagnostic trouble codes cleared `WARM_UPS`

Time run by the engine while MIL was activated `MIL_TIME`

A/C system refrigerant monitoring `ACRF_ENA`

A/C system refrigerant monitoring completed `ACRFCMPL`

A/C system refrigerant monitoring ready `ACRF_RDY`

Catalyst monitoring `CAT_ENA`

Catalyst monitoring completed `CAT_CMPL`

Catalyst monitoring ready `CAT_RDY`

Comprehensive component monitoring completed `CCM_CMPL`

Comprehensive component monitoring ready `CCM_RDY`

EGR system monitoring `EGR_ENA`

EGR system monitoring completed `EGR_CMPL`

EGR system monitoring ready `EGR_RDY`

Evaporative system monitoring `EVAP_ENA`

Evaporative system monitoring completed `EVAPCMPL`

Evaporative system monitoring ready `EVAP_RDY`

Fuel system monitoring completed `FUEL_CMPL`

Fuel system monitoring ready `FUEL_RDY`

Heated catalyst monitoring `HCAT_ENA`

Heated catalyst monitoring completed `HCATCMPL`

Heated catalyst monitoring ready `HCAT_RDY`

Misfire monitoring completed `MIS_CMPL`

Misfire monitoring ready `MIS_RDY`

Oxygen sensor heater monitoring `HTR_ENA`

Oxygen sensor heater monitoring completed `HTR_CMPL`

Oxygen sensor heater monitoring ready `HTR_RDY`

Oxygen sensor monitoring `O2S_ENA`

Oxygen sensor monitoring completed `O2S_CMPL`

Oxygen sensor monitoring ready `O2S_RDY`

Secondary air system monitoring `AIR_ENA`

Secondary air system monitoring completed `AIR_CMPL`

Secondary air system monitoring ready `AIR_RDY`

A/C system refrigerant monitoring supported `ACRF_SUP`

Catalyst monitoring supported `CAT_SUP`

Comprehensive component monitoring enabled `CCM_ENA`

Comprehensive component monitoring supported `CCM_SUP`

Compression ignition monitoring supported `CIM_SUP`

Compression ignition monitoring supported `CIM_SUP_FLAG`

EGR system monitoring supported `EGR_SUP`

Evaporative system monitoring supported `EVAP_SUP`

Fuel system monitoring enabled `FUEL_ENA`

Fuel system monitoring supported `FUEL_SUP`

Heated catalyst monitoring supported `HCAT_SUP`

Misfire monitoring enabled `MIS_ENA`

Misfire monitoring supported `MIS_SUP`

Oxygen sensor heater monitoring supported `HTR_SUP`

Oxygen sensor monitoring supported `O2S_SUP`

Secondary air system monitoring supported `AIR_SUP`