This past weekend I started my journey to EPL Stage 2 tune and installed all my hard parts but still have not flashed the ECU. Here's what I did:
  • sc pulley, idler, tensioner and belt
  • water pump
  • accessory idler and tensioner
  • Fluidampr for future DP but currently stock size (shaved down that metal nub too)
  • Oil change
  • Spark plugs gapped to 0.026
  • Coil packs
  • Coolant change using the Schwaben vacuum purge tool


To do all of this I put the car in service position...I have no freaking idea how someone could do the crank pulley without it. Everything seemed okay until I scanned the car for codes and I found a couple:

Address 08: Auto HVAC Labels: 8Tx-820-043-3Z.clb
Control Module Part Number: 8T1 820 043 AQ HW: 8T1 820 043 AQ
Component and/or Version: KLIMA 3 ZONEN H08 0180
Software Coding: 66102000
Work Shop Code: WSC 06325 000 00000
VCID: 0005B33C938FA8468A-8054
2 Faults Found:

00457 - Control Module for Network (J519)
013 - Check DTC Memory
Freeze Frame:
Fault Status: 01101101
Fault Priority: 6
Fault Frequency: 1
Reset counter: 193
Mileage: 137859 km
Time Indication: 0
Date: 2018.04.15
Time: 20:12:10

00256 - A/C Pressure/Temperature Sensor (G395)
008 - Implausible Signal
Freeze Frame:
Fault Status: 01101000
Fault Priority: 7
Fault Frequency: 1
Reset counter: 193
Mileage: 137859 km
Time Indication: 0
Date: 2018.04.15
Time: 20:12:10

Freeze Frame:
Temperature: 6.0C

Address 09: Cent. Elect. Labels: 8K0-907-063.clb
Control Module Part Number: 8K0 907 063 P HW: 8K0 907 063 P
Component and/or Version: BCM1 1.0 H30 0392
Software Coding: 26001096463CAF212600080300003D0D0F9C93480201016100 0000
Work Shop Code: WSC 06325 123 12345
VCID: 3C7D07CCBFE70CA696-8068
1 Fault Found:

00256 - A/C Pressure/Temperature Sensor (G395)
014 - Defective
Freeze Frame:
Fault Status: 01101110
Fault Priority: 3
Fault Frequency: 1
Reset counter: 193
Mileage: 137859 km
Time Indication: 0
Date: 2018.04.15
Time: 20:12:00

I scanned my car weeks ago (maybe a couple months) and no codes. So I can't say that this issue wasn't present before the work I did. Looking at where the G395 is located I know that I didn't really mess with it directly and I don't think it got hit or anything like that. It don't think that draining and refilling the coolant system would affect this as the G395 is for the refrigerant as far as I know.

Apart from replacing the sensor, which I assume means taking to the shop as the A/C system has to be purged and refilled, I wanted to see what this group thought. Is there anything I should do or check first? Did I maybe do something wrong?

No CEL is showing. Codes came back after clearing.


Thanks,
Shawn