[neemz]

Hello All could do with some help here please.

I have a 2013 2L diesel with 150,000 miles on.

Check engine light came on and I cleared code with a cheap handheld reader that couldn't read it.
3 weeks later it's back again. I got my Forscan scanner out. Log pasted below.

I googled these error codes looks to be straight forward enough, a sensor in the exhaust somewhere. Anybody got any thoughts? I am minded to try cleaning connection with contact cleaner? Or am I not that lucky.

Thanks for any words of advise.


===PCM DTC P20E4:64-AF===
Code: P20E4 - Exhaust Gas Temperature Sensor 2/3 Correlation Bank 1

Additional Fault Symptom:
- Signal Plausibility Failure

Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is On for this DTC

Module: Powertrain Control Module

Freeze Frame :
-GLOBTIM: 302440768 sec - Global real time
-TOTDIST: 242056.0 km - Total Distance
-MAINECUV: 11.25 Volt - Main ECU voltage supply
-ESTSERUN: Yes - Engine status - engine running
-ESTSECRK: No - Engine status - engine in crank
-INCARTMP: 8 °C - In car temperature
-OUTTMP: 8 °C - External Temperature From Sensor
===END PCM DTC P20E4:64-AF===

===PCM DTC P242A:00-2C===
Code: P242A - Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 3

Status:
- DTC Maturing - Intermittent at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Powertrain Control Module

Freeze Frame :
-GLOBTIM: 302380448 sec - Global real time
-TOTDIST: 242048.0 km - Total Distance
-MAINECUV: 14.75 Volt - Main ECU voltage supply
-ESTSERUN: Yes - Engine status - engine running
-ESTSECRK: No - Engine status - engine in crank
-INCARTMP: 16 °C - In car temperature
-OUTTMP: 10 °C - External Temperature From Sensor
===END PCM DTC P242A:00-2C===

===PCM DTC P242E:92-28===
Code: P242E - Exhaust Gas Temperature Sensor Circuit Intermittent/Erratic Bank 1 Sensor 3

Additional Fault Symptom:
- Performance Or Incorrect Operation

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Powertrain Control Module

Freeze Frame :
-GLOBTIM: 302380448 sec - Global real time
-TOTDIST: 242048.0 km - Total Distance
-MAINECUV: 14.75 Volt - Main ECU voltage supply
-ESTSERUN: Yes - Engine status - engine running
-ESTSECRK: No - Engine status - engine in crank
-INCARTMP: 16 °C - In car temperature
-OUTTMP: 10 °C - External Temperature From Sensor
===END PCM DTC P242E:92-28===

===PCM DTC U0284:00-2F===
Code: U0284 - Lost Communication with Active Grille Air Shutter Module A

Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Powertrain Control Module

Freeze Frame :
-GLOBTIM: 275849632 sec - Global real time
-TOTDIST: 229783.0 km - Total Distance
-MAINECUV: 14.75 Volt - Main ECU voltage supply
-ESTSERUN: Yes - Engine status - engine running
-ESTSECRK: No - Engine status - engine in crank
-INCARTMP: 11 °C - In car temperature
-OUTTMP: 5 °C - External Temperature From Sensor
===END PCM DTC U0284:00-2F===

===OBDII DTC P20E4-C===
Code: P20E4 - Exhaust Gas Temperature Sensor 2/3 Correlation Bank 1

 

[neemz]

Thanks all. Purple, like you I had found my own way to possibly the DPF being a cause in this. Or maybe not...

Blake I will go for a drive and monitor the gas sensors to hone in on the dodgy one. From my research the sensor is pre DPF - assuming it is reporting correctly.

Bit of background I have owned the car for years without a hiccup. In the last year my driving style has changed to a lot more short journeys or very short journeys. In the last couple of months I noticed 3 or 4 times when pulling up to park the cooling fan was going at full speed even when ambient temps weren't that high. I never paid it any mind but perhaps the car was in the middle of a regen which would then fail because I stopped the vehicle.

After googling the P sensor error in my OP I stumbled upon this Nissan tech going on about the error commonly having a root cause elsewhere, DPF most likely.

I checked oil level and it is normal. Car doesn't use any and I change it about every 10,000 miles or couple of years (I do about 6-9k a year). I don't fancy throwing £60 down the drain on a sensor if it won't fix it, or just bodge a problem for a few weeks.

Interestingly since my post the engine management light/limp mode hasn't come on since even though I haven't reset the codes. I can see them still stored but it's not showing as active.

Tonight I started the car and did live diagnosis in Forscan with results: DPF_SOOT_LD - 25%. DPF_LOAD - 29% and DPF kpa (pressure?) - 0%. This was at idle from warm engine. Do I need to go for a drive and leave the laptop plugged in to see if those readings rise?

My plan is to force a manual static regen within FORSCAN then see what happens?

Purple would you care to tell me how you "reset all the values" - is that a PCM troubleshooting step somewhere. I vaguely recall seeing it but I'm back in the house now.
I think it may be better to try a forced regen first to see how I go before resetting values.

Thanks a lot.

 

[neemz]

If it helps others found this useful post on a different forum. Specifically the picture I will link to below which lets you know how much you need to panic regarding your DPF %.

DPF Manual regeneration - FORScan forum

http://imgur.com/S1XRaw4

http://imgur.com/S1XRaw4