Page 324 of 431
13B-324V9 MR-372-J84-13B450$152.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR391DISTANCE SINCE PARTICLE FILTER REPLACEMENT
PARAMETER
DEFINITIONThis parameter indicates the distance travelled since particle filter replacement in miles
(kms).
NOTESThis parameter exists only on F9Q816 engines
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature
> 80°C, without electrical consumers
Indicates the mileage since the particle filter was replaced.
EDC16C36_V48_PR391/EDC16C36_V50_PR391/EDC16C36_V58_PR391
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 58
Page 327 of 431
13B-327V9 MR-372-J84-13B450$152.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR412DISTANCE VALUE AT LAST SUCCESSFUL REGENERATION
PARAMETER
DEFINITIONThis parameter indicates the vehicle's mileage at the last successful regeneration in
miles (kms).
NOTESThis parameter exists only on F9Q816 engines
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature
> 80°C, without electrical consumers
This parameter indicates the vehicle's mileage at the last successful regeneration.
EDC16C36_V48_PR412/EDC16C36_V50_PR412/EDC16C36_V58_PR412
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 58
Page 341 of 431

13B-341V9 MR-372-J84-13B450$152.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR784
PR785
PR786
PR787
PR788
PR789
PR790
PR791
PR792
PR793DF312 RECORD NO. 1
DF312 RECORD NO. 2
DF312 RECORD NO. 3
DF312 RECORD NO. 4
DF312 RECORD NO. 5
DF312 RECORD NO. 6
DF312 RECORD NO. 7
DF312 RECORD NO. 8
DF312 RECORD NO. 9
DF312 RECORD NO. 10
PARAMETER
DEFINITIONThese parameters are shown in Km.
NOTESSpecial notes:
These parameters must only be interpreted for DF312 Speed request if it is present
or stored.
These parameters exist only in Vdiag48.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature
> 80°C, without electrical consumers
In the event of a fault, consult the interpretation of fault DF312 Speed request.
These parameters are used for looking up the history of the last ten particle filter warning light activations
Each parameter from PR784 to PR793 contains a record of the vehicle mileage when the particle filter warning
light illuminates. The appearance of fault DF312 Speed request is associated with each of these parameters.
PR784 to PR793 operate through successive copying (when the particle filter warning light comes on, the value of
PR784 is copied to PR785, the value of PR785 is copied to PR786 and so on).
When there are more than ten records, the value of PR793 DF312 record no. 10 is cleared. The new mileage is
allocated to PR784.
If none of the parameters between PR784 and PR793 is available in the sub-function, this means that no data has
been saved. The parameters appear in the sub-function when they have a value above zero.
EDC16C36_V48_PR784/EDC16C36_V48_PR785/EDC16C36_V48_PR786/EDC16C36_V48_PR787/EDC16C36_V48_PR788/
EDC16C36_V48_PR789/EDC16C36_V48_PR790/EDC16C36_V48_PR791/EDC16C36_V48_PR792/EDC16C36_V48_PR793/
EDC16C36_V58_PR784/EDC16C36_V58_PR785/EDC16C36_V58_PR786/EDC16C36_V58_PR787/EDC16C36_V58_PR788/
EDC16C36_V58_PR789/EDC16C36_V58_PR790/EDC16C36_V58_PR791/EDC16C36_V58_PR792/EDC16C36_V58_PR793
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 48, 58
Page 342 of 431

13B-342V9 MR-372-J84-13B450$152.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR794
PR795
PR796
PR797
PR798
PR799
PR800
PR801
PR802
PR803REGENERATION FAILURE RECORD NO. 1
REGENERATION FAILURE RECORD NO. 2
REGENERATION FAILURE RECORD NO. 3
REGENERATION FAILURE RECORD NO. 4
REGENERATION FAILURE RECORD NO. 5
REGENERATION FAILURE RECORD NO. 6
REGENERATION FAILURE RECORD NO. 7
REGENERATION FAILURE RECORD NO. 8
REGENERATION FAILURE RECORD NO. 9
REGENERATION FAILURE RECORD NO. 10
PARAMETER
DEFINITIONThese parameters are shown in Km.
NOTESSpecial notes:
For Vdiag48:
These parameters must only be interpreted for DF312 Speed request if it is present
or stored.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature
> 80°C, without electrical consumers
These parameters are used so that the history of the last ten failed regenerations when driving is known.
Each parameter between PR794 and PR803 contains the vehicle mileage when particle filter regeneration fails
when driving. each parameter relates to an engine status. They are recorded simultaneously (for example PR797
Regeneration failure record No. 4 is associated with ET709 Engine status record no. 4).
PR794 to PR803 operate through successive copying (when regeneration fails whilst driving, the value of PR794
is copied to PR795, the value of PR795 is copied to PR796 and so on).
When there are more than ten records, the value of PR803 Regeneration failure record no. 10 is overwritten.
The new mileage is allocated to PR794.
If none of the parameters between PR794 and PR803 is available in the sub-function, this means that no data has
been saved. The parameters appear in the sub-function when they have a value above zero.
EDC16C36_V48_PR794/EDC16C36_V48_PR795/EDC16C36_V48_PR796/EDC16C36_V48_PR797/EDC16C36_V48_PR798/
EDC16C36_V48_PR799/EDC16C36_V48_PR800/EDC16C36_V48_PR801/EDC16C36_V48_PR802/EDC16C36_V48_PR803/
EDC16C36_V50_PR794/EDC16C36_V50_PR795/EDC16C36_V50_PR796/EDC16C36_V50_PR797/EDC16C36_V50_PR798/
EDC16C36_V50_PR799/EDC16C36_V50_PR800/EDC16C36_V50_PR801/EDC16C36_V50_PR802/EDC16C36_V50_PR803/
EDC16C36_V58_PR794/EDC16C36_V58_PR795/EDC16C36_V58_PR796/EDC16C36_V58_PR797/EDC16C36_V58_PR798/
EDC16C36_V58_PR799/EDC16C36_V58_PR800/EDC16C36_V58_PR801/EDC16C36_V58_PR802/EDC16C36_V58_PR803
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 58
Page 344 of 431

13B-344V9 MR-372-J84-13B450$152.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
*reg: regeneration
PR816
PR817
PR818
PR819
PR820
PR821
PR822
PR823
PR824
PR825
CONTINUED
Each parameter from PR816 to PR825 records the mileage at the start of particle filter regeneration, for which the
request status is recorded by ET742 Stored reg.* request status no. 1 to ET751 Stored reg.* request status
no. 10 (for example PR819 Stored regeneration start no. 4 is associated with ET745 Stored reg. request
status no. 4).
Each time a new regeneration is started when driving, the vehicle mileage is recorded in PR816, as well as its
status in ET742 Stored reg.* request status no. 1.
PR816 to PR825 operate through successive copying (when regeneration starts, the value of PR816 is copied to
PR817, the value of PR817 is copied to PR818 and so on).
When there are more than ten stored items, the value of PR825 Regeneration start record no. 10 is overwritten.
The new mileage is allocated to PR816.
If only the parameter PR816 Regeneration start record no. 1 is available in the sub-function and it has no value,
this indicates that no record was made.
If a record has been made, it will have a value above zero.
AFTER REPAIRCarry out a road test, then check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 48, 50, 58
Page 346 of 431

13B-346V9 MR-372-J84-13B450$152.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR873OIL OXIDATION SIGNAL
PARAMETER
DEFINITIONThis parameter indicates the distance of the vehicle when the oil dilution threshold is
reached.
NOTESOnly apply the interpretation of this parameter if the OCS (oil control system)
program is activated on the instrument panel. On the instrument panel computer,
check the configuration reading LC106 OCS: WITH
This parameter is not operational in Vdiag44
Conformity check with engine stopped and ignition on, or engine running, and engine coolant
temperature > 80°C, without electrical consumers
The oil condition is calculated by the oxidation program in the injection computer, according to the number of
engine revolutions.
When this count reaches a certain threshold before the end of the oil service period, the injection computer sends
a signal to the instrument panel, which will display service due. Parameter PR873 corresponds to the vehicle
mileage at the time this signal is sent.
Then the instrument panel computer deducts 900 miles (1500 km) before displaying the message Service
required.
IMPORTANT
When the message Service required appears on the instrument panel, the customer must arrange an oil change
within the remaining 900 miles (1500 km).
EDC16CP36_V4C_PR873/EDC16CP36_V48_PR873/EDC16CP36_V50_PR873/EDC16CP36_V54_PR873/EDC16CP36_V58_PR873
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition until the end of the power-latch phase, and carry out a road test
followed by a check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 4C, 48, 50,
54, 58
Page 347 of 431
13B-347V9 MR-372-J84-13B450$152.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR874LAST SERVICE
PARAMETER
DEFINITIONThis parameter indicates the vehicle mileage the last time a service was carried out.
The vehicle mileage is updated when the oil service parameters are reinitialised in the
instrument panel.
This parameter is not operational in Vdiag44.
NOTESNone.
EDC16CP36_V4C_PR874/EDC16CP36_V48_PR874/EDC16CP36_V50_PR874/EDC16CP36_V54_PR874/EDC16CP36_V58_PR874
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition until the end of the power-latch phase, and carry out a road test
followed by a check with the diagnostic tool.
EDC16 C36
Program No.: 91
Vdiag No.: 4C, 48, 50,
54, 58
Page 348 of 431

13B-348V9 MR-372-J84-13B450$152.mif
DIESEL INJECTION
Fault finding – Interpretation of parameters13B
PR875OIL DILUTION SIGNAL
PARAMETER
DEFINITIONThis parameter indicates the vehicle mileage when the oil dilution threshold is reached.
NOTESThis parameter should be interpreted only if the OCS (Oil Control System) program
is activated on the instrument panel. On the instrument panel computer, check the
configuration reading LC106 O.C.S: WITH.
Conformity check with engine stopped and ignition on, or engine running, and engine coolant temperature
> 80°C, without electrical consumers
The injection computer assesses the dilution rate of the engine oil according to the customer's driving style. When
the dilution level reaches a certain threshold before the end of the oil change interval, the injection computer sends
a signal to the instrument panel, which then displays Service required. Parameter PR875 corresponds to the
vehicle mileage at the time this signal is sent.
IMPORTANT
When the message service required appears on the instrument panel, the customer must carry out an oil service
immediately to prevent damage to their engine.
EDC16CP36_V50_PR875EDC16 C36
Program No.: 91
VDIAG No.: 50
AFTER REPAIRDeal with any other faults. Clear the fault memory.
Switch off the ignition until the end of the power-latch phase, and carry out a road test
followed by a check with the diagnostic tool.