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Citroën C4

Emission parameters

The Citroën C4 has 18 emission parameters.

● Confirmed◆ In testing○ Supported× Not supported

How to read a parameter card

Catalyst inlet temperature CITROEN_CATALYST_INLET_T

  • Request22 39 14
  • Service 22DID 3914
  • ModuleDA10 → 10
  • Every5 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 2 ÷ 100 − 40)
Range
-40 to 900 °C
Unit
°C

In testing for 2004 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.

Catalyst inlet temperature CITROEN_CATALYST_INLET_T

  • Request22 39 14
  • Service 22DID 3914
  • ModuleDA10 → 10
  • Every5 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 2 ÷ 100 − 40)
Range
-40 to 900 °C
Unit
°C

In testing for 2004 to 2026.

Distance between DPF regens (last 5 average) CITROEN_AVG_DIST_REGENS

  • Request22 38 09
  • Service 22DID 3809
  • ModuleDA10 → 10
  • Every3600 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 10)
Range
0 to 10000 km
Unit
km

In testing for 2004 to 2026.

Distance since last DPF regen CITROEN_DIST_SINCE_REGEN

  • Request22 38 07
  • Service 22DID 3807
  • ModuleDA10 → 10
  • Every60 s
  • Testing

Bits 0 to 23 of the reply, 24 bits.

Formula
(val ÷ 10)
Range
0 to 10000 km
Unit
km

In testing for 2004 to 2026.

DPF differential pressure CITROEN_DPF_DIFF_PRESS

  • Request22 18 E2
  • Service 22DID 18E2
  • ModuleDA10 → 10
  • Every5 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 10 − 3276.8)
Range
-50 to 50 kPa
Unit
kPa

In testing for 2004 to 2026.

DPF flow resistance CITROEN_DPF_FLOW_RES_2

  • Request22 18 E8
  • Service 22DID 18E8
  • ModuleDA10 → 10
  • Every5 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 10000)
Range
0 to 10
Unit
Number

In testing for 2004 to 2026.

DPF inlet temperature CITROEN_DPF_INLET_T

  • Request22 18 DE
  • Service 22DID 18DE
  • ModuleDA10 → 10
  • Every5 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 2 ÷ 100 − 40)
Range
-40 to 900 °C
Unit
°C

In testing for 2004 to 2026.

DPF outlet temperature CITROEN_DPF_OUTLET_T

  • Request22 39 15
  • Service 22DID 3915
  • ModuleDA10 → 10
  • Every5 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 2 ÷ 100 − 40)
Range
-40 to 900 °C
Unit
°C

In testing for 2004 to 2026.

DPF regen duration (last 5 average) CITROEN_AVG_REGEN_DUR

  • Request22 38 0A
  • Service 22DID 380A
  • ModuleDA10 → 10
  • Every3600 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 60)
Range
0 to 30 min
Unit
min

In testing for 2004 to 2026.

DPF regen interrupted count CITROEN_REGEN_INTERRUPTED

  • Request22 18 A5
  • Service 22DID 18A5
  • ModuleDA10 → 10
  • Every60 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
val
Range
0 to 255
Unit
Number

In testing for 2004 to 2026.

DPF regen progress CITROEN_REGEN_PROGRESS

  • Request22 38 0B
  • Service 22DID 380B
  • ModuleDA10 → 10
  • Every5 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 100 ÷ 65535)
Range
0 to 100 %
Unit
%

In testing for 2004 to 2026.

DPF regen temperature (last 5 average) CITROEN_AVG_REGEN_TEMP

  • Request22 38 08
  • Service 22DID 3808
  • ModuleDA10 → 10
  • Every3600 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 50 − 40)
Range
-40 to 900 °C
Unit
°C

In testing for 2004 to 2026.

DPF soot clogging level CITROEN_DPF_SOOT_PCT

  • Request22 18 E4
  • Service 22DID 18E4
  • ModuleDA10 → 10
  • Every30 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 1000 ÷ 65535)
Range
0 to 100 %
Unit
%

In testing for 2004 to 2026.

Forced regen state CITROEN_FORCED_REGEN

  • Request22 18 EC
  • Service 22DID 18EC
  • ModuleDA10 → 10
  • Every5 s
  • Testing

Bits 0 to 7 of the reply, 8 bits.

Formula
val
Range
0 to 255
Unit
Number

In testing for 2004 to 2026.

Lambda downstream DPF O2 concentration CITROEN_LAMBDA_DPF_DS

  • Request22 18 ED
  • Service 22DID 18ED
  • ModuleDA10 → 10
  • Every2 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 512)
Range
0 to 25 %
Unit
%

In testing for 2004 to 2026.

NOx storage catalyst load CITROEN_NOX_LOAD_PCT

  • Request22 39 2B
  • Service 22DID 392B
  • ModuleDA10 → 10
  • Every60 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val × 100 ÷ 65535)
Range
0 to 100 %
Unit
%

In testing for 2004 to 2026.

Particulate filter flow resistance CITROEN_DPF_FLOW_RES

  • Request22 18 E8
  • Service 22DID 18E8
  • ModuleDA10 → 10
  • Every5 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
(val ÷ 10000)
Range
0 to 6.55
Unit
Number

In testing for 2004 to 2026.

Total DPF regenerations completed CITROEN_REGEN_COMPLETED

  • Request22 39 12
  • Service 22DID 3912
  • ModuleDA10 → 10
  • Every3600 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
val
Range
0 to 65535
Unit
Number

In testing for 2004 to 2026.

Total DPF regenerations started CITROEN_REGEN_TOTAL

  • Request22 18 A4
  • Service 22DID 18A4
  • ModuleDA10 → 10
  • Every3600 s
  • Testing

Bits 0 to 15 of the reply, 16 bits.

Formula
val
Range
0 to 65535
Unit
Number

In testing for 2004 to 2026.

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