Diagnostic Codes
Thread Starter
Instructor
Joined: Jun 2021
Posts: 102
Likes: 77
From: Houston
Diagnostic Codes
Can anyone tell me what the following codes are
P31D5
P31E3
i think they are related to my aftermarket exhaust and they are causing me to get a fail on the vehicle inspection. The car is running fine but I don’t know what these codes are?
P31D5
P31E3
i think they are related to my aftermarket exhaust and they are causing me to get a fail on the vehicle inspection. The car is running fine but I don’t know what these codes are?
Moderator
Joined: Feb 2006
Posts: 38,977
Likes: 17,851
From: DFW Area TX
Neither of those codes are listed in the 2020 Service Manual. Here's the list of P31xx codes:
- P3100 Exhaust - DTC P12E3-P12FF, P3100, or P3101
- P3101 Exhaust - DTC P12E3-P12FF, P3100, or P3101
- P314E Engine Controls and Fuel - 6.2L (LT2) - DTC P10C6, P10F5, P11FF, P128C, P128D, P128F, P135C, P14A0, P14B6, P14D4-P14D6, P150C, P1762, P2544, P30DE, P314E, or U137A
- P314F Antilock Brake System - DTC P314F
- P3186 Engine Controls and Fuel - 6.2L (LT2) - DTC P026B, P0601-P0607, P060A, P060B, P0610, P061C, P062B, P062F, P0630,P064D, P064E, P134C, P160A, P160D, P160E, P161C, P16F3, P2610, P262B,P264F, P27B5, P3186, or P3191
- P3186 Data Communications - DTC P0601-P0607, P060A-P060C, P0610, P062F, P16E9-P16F3, P16F9, P16FD, P16FE, P262B,P30D6-P30DD, P3186, or P3996
- P3191 Engine Controls and Fuel - 6.2L (LT2) - DTC P026B, P0601-P0607, P060A, P060B, P0610, P061C, P062B, P062F, P0630, P064D, P064E, P134C, P160A, P160D, P160E, P161C, P16F3, P2610, P262B, P264F, P27B5, P3186, or P3191
Safety Car
Joined: Jul 2013
Posts: 4,408
Likes: 3,484
From: Granada Hills CA
I found this for you from another post:
Just installed Fabspeed Valvetronic on a 2021 C8 and we keep getting an SES light
DTC code P31D5: valve re-learn failure
The valves seem to open and close fine when the modes are changed, but the error light does not want to go away, we did the re-learn procedure a few times now with no luck
Just installed Fabspeed Valvetronic on a 2021 C8 and we keep getting an SES light
DTC code P31D5: valve re-learn failure
The valves seem to open and close fine when the modes are changed, but the error light does not want to go away, we did the re-learn procedure a few times now with no luck
Thread Starter
Instructor
Joined: Jun 2021
Posts: 102
Likes: 77
From: Houston
I found this for you from another post:
Just installed Fabspeed Valvetronic on a 2021 C8 and we keep getting an SES light
DTC code P31D5: valve re-learn failure
The valves seem to open and close fine when the modes are changed, but the error light does not want to go away, we did the re-learn procedure a few times now with no luck
Just installed Fabspeed Valvetronic on a 2021 C8 and we keep getting an SES light
DTC code P31D5: valve re-learn failure
The valves seem to open and close fine when the modes are changed, but the error light does not want to go away, we did the re-learn procedure a few times now with no luck
I am going to install some valve simulators and that should correct the problem.
But these aftermarket exhausts, should have included them in their original packaging because it would save a lot of headaches and extra labor and costs.
