2021-2022 Audi A6 Hesitation & DTCs P010600 P023600 TSB

Owners of 2021-2022 Audi A6 vehicles equipped with the 2.0TFSI engine may encounter issues such as engine hesitation, low power, or a bucking/jerking sensation while driving. These symptoms are often accompanied by an illuminated Malfunction Indicator Lamp (MIL) and specific diagnostic trouble codes (DTCs) stored in the engine control module (ECM), J623. This technical service bulletin, 01 21 13 2062323/2, addresses these concerns by identifying a wiring fault at the G31 charge pressure sender.

This bulletin supersedes an earlier Technical Service Bulletin, Group 01 number 21-98, dated February 18, 2021, with revisions made on October 20, 2021, to include Model Year 2022 vehicles.

Symptoms

If you own a 2021-2022 Audi A6 and notice any of the following, your vehicle may be affected by this issue:

• The vehicle feels as if it is "hesitating, is low on power or is bucking/jerking while driving."
• The Malfunction Indicator Lamp (MIL) may also be illuminated on the dashboard.

Fault Codes / DTCs

When diagnosing this issue, technicians may find one or more of the following diagnostic trouble codes (DTCs) stored in the engine control module (ECM), J623 (address word 0001):

Code	Description
P010600	Manifold Abs.Pressure or Bar.Pressure Range/Performance
P023600	Turbocharger Boost Sensor (A) Circ. Range/Performance

Diagnosis / Trigger Conditions

The root cause of the Audi A6 hesitation DTC P023600 and P010600 codes is often traced to damage in the yellow wire on the electrical connector of the charge pressure sender, specifically the G31 sensor. This damage occurs due to the routing and uncovered length of the wiring, making it susceptible to vibrations over time. During production, the harness is now secured with textile tape to prevent this issue.

Important Warnings

Audi explicitly states: "Parts replacement does not solve this issue. Claims for replaced parts (e.g. G31 sensor or turbocharger) will be subject to review." This means that simply replacing the G31 sensor or the turbocharger will not resolve the underlying wiring problem and may lead to unnecessary repair costs.

Repair Procedure Summary

The repair outlined in Technical Service Bulletin 01 21 13 2062323/2 involves inspecting and repairing the wiring at the G31 boost pressure sensor. If damage to the pins or wire is found, the harness must be repaired using a specialized wire harness repair set. It is crucial to use gold-plated contacts for the repair and ensure there is sufficient slack in the harness to prevent future issues. After the wire repair, the harness must be re-wrapped with textile tape, starting below the connector and extending to cover the connector base, ensuring the wires remain flat to avoid stressing the pins.

Required Tools or Parts

Specialized tools and parts are required for this repair:

• Part Number N 10592002: Textile Tape
• Part Number 000979025EA: Gold-plated contact
• Part Number 000979940: Butt connector
• Tool VAS 1978B: Wire harness repair set
• Tool VAS 6160/VAS 6150: VAS tester with the current version of ODIS (Windows 10)
• Fasteners, Bolts, Nuts, and Screws as needed (refer to ETKA/ELSA)

Owner Action

If your 2021-2022 Audi A6 is exhibiting symptoms like hesitation, low power, or bucking, especially if the MIL is illuminated or you suspect an Audi A6 hesitation DTC P023600, it is recommended to schedule an appointment with an authorized Audi service center. Be sure to mention the symptoms and the possibility of a wiring issue related to TSB 01 21 13 2062323/2. Warranty claims for this repair may be covered for up to 48 months or 50,000 miles, or under CPO (Certified Pre-Owned) warranty if applicable. If your vehicle is outside of warranty, this bulletin serves as informational guidance.

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Source: NHTSA ID: 10202577