508 2.0 hdi engine warning light
Moderator: RichardW
508 2.0 hdi engine warning light
afternoon folks, new member here so apologies in advance if the question has already been addressed - my warning light came on on my 508 2.0 hdi auto had it look at by a friend who said its fault code P2084 - which could be an exhaust gas temperature circuit range fault or particle filter temp sensor variation in voltage outside tolerance? the car still runs ok but its a bit disconcerting having the engine light on - it has gone off for a day or so a couple of times but returns - any help or advice would be greatly appreciated - many thanks in advance Steve
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Re: 508 2.0 hdi engine warning light
We'll need your VIN (automatically masked from public view) in order to relate the fault code specifically to your engine management system.
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Marc
Marc
Re: 508 2.0 hdi engine warning light
VF3**************[VIN obfuscated, can be read by forum staff] Thanks Marc
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Re: 508 2.0 hdi engine warning light
Ok, so you have the 163 DW10CTED4 engine.
This fault is basically saying that the temperature readings are out of kilter:
The above is the particulate filter upstream gas temperature sensor and its role is to inform the ECU of the temperature of the exhaust gases.
It is a NTC (Negative Temperature Coefficient) resistance value "R" which changes in relation to the change in the temperature "T":
So I would check the connector first and if it is suspected as faulty then you have the information for a replacement.
1618KP is the part number, item 2 below in the parts diagram:
This fault is basically saying that the temperature readings are out of kilter:
Fault code | P2084 |
After sales description of the fault code | Particulate filter upstream gas temperature sensor: Voltage variation outside the tolerance |
Description of the diagnostics |
|
Conditions of activation of the diagnostics | Engine running |
Conditions of disappearance of the fault | Driving with the engine hot for 5 minutes |
Down-grade modes if fault present | Deactivation of the request for regeneration of the particle filter from the diagnostic tool |
Switching on of the warning lamp and/or warning message | Warning lamp MIL |
Main customer complaints likely | No effects immediately perceptible to the customer |
Suspect areas |
|
It is a NTC (Negative Temperature Coefficient) resistance value "R" which changes in relation to the change in the temperature "T":
- When the temperature "T" increases, the resistance value "R" decreases
- When the temperature "T" decreases, the resistance value "R" increases
Minimum Tolerance ( °C) | Temperature ( °C) | Maximum Tolerance ( °C) | Resistance ( kohms) |
90 °C | 100 °C | 110 °C | 96 kohms |
140 °C | 150 °C | 160 °C | 32 kohms |
190 °C | 200 °C | 210 °C | 13,5 kohms |
240 °C | 250 °C | 260 °C | 6,3 kohms |
290 °C | 300 °C | 310 °C | 3,3 kohms |
340 °C | 350 °C | 360 °C | 1,85 kohms |
390 °C | 400 °C | 410 °C | 1,15 kohms |
440 °C | 450 °C | 460 °C | 0,755 kohms |
480 °C | 500 °C | 520 °C | 0,514 kohms |
530 °C | 550 °C | 570 °C | 0,362 kohms |
580 °C | 600 °C | 620 °C | 0,268 kohms |
630 °C | 650 °C | 670 °C | 0,198 kohms |
680 °C | 700 °C | 720 °C | 0,151 kohms |
1618KP is the part number, item 2 below in the parts diagram:
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Marc
Marc
Re: 508 2.0 hdi engine warning light
thank you Marc, thats brilliant - i take it that its a job for a mechanic if your not very good at diy car repair!!
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Re: 508 2.0 hdi engine warning light
There was a recall listed on some of the Citroens (Can't remember which exactly) where the harness had been badly routed and rubbed through on the hot exhaust, remedy was to replace the harness and re-route it.
Man is, by nature, a lazy beast, he does not need twice encouraging to do nothing.
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Re: 508 2.0 hdi engine warning light
I think that was mostly on the Relays and a few other older vehicles - no recall listed for this on the 508, but worth checking that the probe is properly secured and the cable is not touching the exhaust.
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Marc
Marc
Re: 508 2.0 hdi engine warning light
Will do lads - decided to try and have a look myself before going to a garage - I'll let you know how I get on - once again thanks for the info