97 Mil On: DTC U064100 Or U064000 For Fuel Tank Breather - 2.0 LTR. TFSI Ea888 (GROUP 97, NO. 24-05)
Reference number: GROUP 97, NO. 24-05
Supersedes refnos: 2069123/1, 2069123/2, GROUP 97, NO. 23-90
97 MIL ON: DTC U064100 OR U064000 FOR FUEL TANK BREATHER - 2.0 LTR. TFSI EA888
TECHNICAL SERVICE BULLETIN
| AUDI: | 2021-2023 A4, A4 allroad, A5, A5 Cabriolet, and A5 Sportback |
| GROUP: | 97 - Electrical Wiring |
SERVICE INFORMATION
97 24 05 2069123/2 January 18, 2024. Supersedes Technical Service Bulletin Group 97 number 23-90 dated January 17, 2023, for reasons listed below.
| Model(s) | Year | VIN Range | Vehicle-Specific Equipment |
|---|---|---|---|
| A4, A4 allroad, A5, A5 Cabriolet, and A5 Sportback | 2021 - 2023 | All | Not Applicable |
CONDITION
| Revision | Date | Purpose |
|---|---|---|
| 2 | - | Revised header (Add Model Year 23) Revised Production solution (Add description of specific change) |
| 1 | 1/17/2023 | Initial publication |
Customer states:
The check engine warning lamp comes on.
Workshop findings:
One or more of the following DTCs are stored sporadically in the Engine Control Module, -J623- (address word 01):
- DTC U064000: Lost Communication with EVAP Fuel Vapor Temperature Sensor Circuit.
- DTC U064100: Lost Communication with EVAP System Pressure Sensor/Switch Circuit "A".
TECHNICAL BACKGROUND
In certain circumstances, EMI may negatively influence the signal from the fuel tank breather system.
PRODUCTION SOLUTION
Optimized routing.
SERVICE
For DTC's that are statically stored, continue with normal diagnosis, in this case the TSB does not apply.
For DTC's that are stored sporadically, the wire harness will need to be modified using the steps below.
- Remove plenum chamber covers (green arrows, Figure 1)
Release wiring harness securing clips (yellow arrows, Figure 1).
Using a seam ripper, expose the wiring harness as shown in Figure 2.
- Isolate the yellow/grey wire (triple twisted wire; blue arrow, figure 2) in the left bundle.
Isolate the yellow/purple wire in the right bundle (black arrow, Figure 2).
Cut the yellow/grey wire at the blue arrow and unravel it in the direction of the plenum chamber up to the red arrow.
Cut the yellow/purple wire at the black arrow.
- Using wire harness repair set VAS 1978 B
, perform the following:
Connect the untwisted yellow/grey wire (plenum chamber side) from the left bundle to the yellow/purple wire in the right bundle (engine side).
Connect the remaining yellow/purple wire (plenum side) to the yellow/grey wire (engine side).
- Clear DTCs and recheck functionality. If ok, wrap the wiring harness in adhesive tape N 10729002 and reassemble the vehicle.
WARRANTY
| Claim Type: |
|
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| Service Number: | 9709 | ||
| Damage Code: | 0040 | ||
| Labor Operations: | Remove and install plenum chamber cover | 8522 1900 | See SRT with associated operations |
| Repair wiring harness | 9709 4152 | See SRT with associated operations | |
| Modify wiring harness | 9709 4999 | 10 TU | |
| Diagnostic Time: | GFF | 0150 0000 | Time stated on the diagnostic protocol (Max 100 TU) |
| Road test prior to the service procedure | No allowance | 0 TU | |
| Road test after the service procedure | 0121 0004 | 10 TU | |
| Claim Comment: | As per TSB 2069123/2 | ||
All warranty claims submitted for payment must be in accordance with the Audi Warranty Policies and Procedures Manual . Claims are subject to review or audit by Audi Warranty.
REQUIRED PARTS AND TOOLS
Always check with your Parts Department and/or ETKA for the latest information and parts bulletins.
| Part Number | Part Description | Quantity |
|---|---|---|
| See ETKA | Fasteners, Bolts, Nuts, and Screws as needed per the Repair Manual | See ETKA/ELSA |
| 000979940 | Butt connector | 2 |
| N 10729002 | Adhesive Tape | 2 |
ADDITIONAL INFORMATION
All parts and service references provided in this TSB (2069123 ) are subject to change and/or removal.