P048C - clear it or take it in?

CTD_Chevrolet · Nov 12, 2017

I just got this code in my 2015 at ~7,995 miles. Here's the full error:

Code:

9162 - Sensor for Exhaust Flap 
P048C 00 [232] - Implausible Signal
MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 1
Mileage: 12840 km
Date: 2030.14.06
Time: 01:12:03
Engine speed: 0.00 /min
Normed load value: 0.0 %
Vehicle speed: 0 km/h
Coolant temperature: -9 °C
Intake air temperature: -8 °C
Ambient air pressure: 850 mbar
Voltage terminal 30: 11.720 V
Dynamic environmental data: 20 96
Unlearning counter according OBD: 40
Particle filter outlet temp.sens.1 bank 1: raw value: -9.6 °C
Exh.recircul.valve 1 bank 1: pos.feedback - Spec.value: 0.00 %
Exh.recircul.valve 1 bank 1: pos.feedback - Act.value: 90.64 %
Exh.recircul.valve 1 bank 1: pos.feedback -Offset closed.: 0.00 %
Exhaust recirculation valve 1 bank 1: monitoring - status-Bit 0: 0
Exhaust recirculation valve 1 bank 1: monitoring - status-Bit 16: 8
Exhaust recirculation valve 1 bank 1: monitoring - status-Bit 24: 55
Exhaust recirculation valve 1 bank 1: monitoring - status-Bit 8: 66
Exh.recircul.valve 1 bank 1: pos.feedback - Uncnd vlt: 1006.6 mV

The DPF light was on when I parked and left town for 5 days, just got home to go for a drive to regen and the CEL was on when I started it. Should I figure it was due to the other conditions and clear it, or leave it and make an appointment at the dealership? It doesn't bother me much if I clear it and it comes back, but I don't want it to suddenly poop the bed on a road trip and screw me.

cfm56 · Nov 13, 2017

take it in is what i would do. Let them deal with it and replace what needs to be replaced. If you don't mind, report back on the fix

16vjohn · Nov 15, 2017

If you opted for the emissions modification, that flap is covered for eons. I say clear it and see if it comes back. A visit to the dealer for warranty service is mediocre at best. Unless you can get them to give you a loaner to load the miles upon for a few days.

CTD_Chevrolet · Nov 16, 2017

Update: I went to a tire shop to order winter tires and my next stop was the dealership, but the MIL turned off when I left the tire shop so I'm just leaving it alone for now.

cfm56 said:
take it in is what i would do. Let them deal with it and replace what needs to be replaced. If you don't mind, report back on the fix

I'll post an update if/when it comes back on.

16vjohn said:
If you opted for the emissions modification, that flap is covered for eons. I say clear it and see if it comes back. A visit to the dealer for warranty service is mediocre at best. Unless you can get them to give you a loaner to load the miles upon for a few days.

This was my thought as well. I have the emissions forever warranty (new old stock car, so it was already done when I bought it), I just have the fear that they will see I cleared it then say it's my fault when it fails for not bringing it in sooner. I've never owned a car with a warranty before.

16vjohn · Nov 20, 2017

On the other hand, if you believe what they tell you about OBD, a code like that should clear itself provided it goes back to normal function for a period of time.

P048C - clear it or take it in?

CTD_Chevrolet

Veteran Member

cfm56

Veteran Member

16vjohn

Vendor , w/Business number

CTD_Chevrolet

Veteran Member

16vjohn

Vendor , w/Business number