2022-2024 Audi e-tron GT Radiator Fan Stuck DTC P2B3000

Audi has released Technical Service Bulletin (TSB) 2073599/4 to address concerns regarding the thermal management system in certain 2022-2024 e-tron GT and RS e-tron GT models. This bulletin specifically targets instances where radiator fan 1 and/or fan 2 become stuck, leading to diagnostic trouble codes (DTCs) P2B3000 or P2B3200. Owners experiencing a reduced heating or cooling output, or even a decrease in drive power or charging capacity, may be affected by this issue. This TSB provides guidance for technicians to diagnose and repair the Audi e-tron GT radiator fan stuck P2B3000 problem.

Revision History

Audi's TSB 2073599/4 has undergone several revisions to refine its guidance and scope:

• Revision 4: Service instructions were revised (change to text).
• Revision 3 (January 15, 2026): The title, header (including model codes), condition, technical background, production solution, service, and warranty sections were all revised. The warranty section specifically saw a change to its table.
• Revision 2 (June 26, 2024): The header was revised to add Model Year 2024, and service instructions were updated to correct part introduction dates.

Symptoms

Owners of affected Audi e-tron GT and RS e-tron GT vehicles may notice several symptoms related to the thermal management system. These complaints can vary depending on the vehicle's driving profile and load requirements. Common issues reported by customers include:

• Heating output too low / no heating output.
• Cooling output too low / no cooling output.
• Drive power too low.
• Charging capacity too low.

These symptoms are often a direct result of the radiator fans not operating correctly, which impacts the vehicle's ability to maintain optimal operating temperatures for various systems.

Fault Codes and Diagnostic Trouble Codes (DTCs)

When a thermal management system issue, such as an Audi e-tron GT radiator fan stuck P2B3000, occurs, specific fault codes are typically logged in the vehicle's control modules. Workshop findings indicate that the following event memory entries are commonly found in the J1024 Thermal management control unit (address word 00C5):

Code	Symptom ID	Description	Module
P2B3000	59328	Fan 1 stuck on.	J1024 Thermal management (00C5)
P2B3200	59342	Fan 2 stuck on.	J1024 Thermal management (00C5)

These DTCs confirm that one or both radiator fans are experiencing a mechanical obstruction or malfunction within the thermal management system.

Technical Background and Trigger Conditions

The root cause of the radiator fan issues, including the Audi e-tron GT radiator fan stuck P2B3000 fault, is often attributed to foreign objects or dirt entering the fan module. The likelihood of this complaint occurring is increased by frequent driving on unpaved roads, gravel surfaces, or roads that have been gritted. These conditions can introduce debris into the fan assembly, causing the fans to seize or operate improperly.

Audi implemented a production solution for vehicles manufactured from March 2023 onwards. These vehicles feature modified components designed to better prevent foreign objects and dirt from entering the fan motor assembly.

Repair Procedure Summary

For vehicles experiencing these thermal management issues, the service procedure outlined in TSB 2073599/4 involves inspecting and potentially replacing specific components. If the primary complaint is about noise, technicians are instructed to first consult TSB 2073030, titled "19 Grinding or knocking noises from electric cooling fans when active," before proceeding with this bulletin.

Several components have been redesigned to prevent dirt and stones from obstructing the fan motor. These new versions feature larger openings on the underside, allowing foreign objects to escape more easily, and a protective cap on the fan's electric motor to prevent debris ingress. When replacing a fan as part of this TSB, technicians must check all other related components on the affected side (left or right) and replace any older versions with the updated parts to ensure a complete and lasting repair.

For example, if the right-side fan (part number 9J1121205C) is the subject of the complaint, technicians should check all other components on the right side of the vehicle according to the component table below and replace them with the new versions if necessary.

Component Part Numbers and Revisions

The following table details the old and new component versions that have been modified to address the issue of the Audi e-tron GT radiator fan stuck P2B3000 and P2B3200 codes. These parts are crucial for preventing foreign objects from interfering with the radiator fan operation.

Component	Old version	New version	Date of introduction of new version into production
Lower part of wheel housing liner (right-side)	9J1809958B	9J1809958D	1/31/2022
Lower part of wheel housing liner (left-side)	9J1809957B	9J1809957D	1/31/2022
Radiator fan (module incl. cowl) (right-side)	9J1121205C/D	9J1121205F	5/25/2023
Radiator fan (module incl. cowl) (left-side)	9J1121203C/D	9J1121203F	5/25/2023
Protective cap (right-side)	9J1959725	9J1959725A	2/28/2022
Protective cap (left-side)	9J1959459	9J1959459A	2/28/2022
Air deflector (right-side)	9J1121674	9J1121674A	11/15/2021
Air deflector (left-side)	9J1121673	9J1121673A	11/15/2021

Important Warnings

For technicians and owners, it is important to note that if a specific new version of a component is no longer available, the instruction is to use the later available version. Additionally, if the vehicle is outside of any warranty, this Technical Service Bulletin is informational only, providing guidance without direct coverage for the repair costs.

Warranty Information

For warranty claims related to TSB 2073599/4, the following details apply:

• Service Number: 1908
• Damage Code: 0040
• Claim Comment: Claims must include the comment "As per TSB 2073599/4."

All warranty claims submitted for payment must adhere to the guidelines set forth in the Audi Warranty Policies and Procedures Manual. Claims are subject to review or audit by Audi Warranty.

NHTSA ID: 11028453