2025 Audi Engine Oil Pressure Sensor P2D8F00 TSB

Audi has issued Technical Service Bulletin (TSB) 2079097/1, released on August 29, 2025, to address a specific Diagnostic Trouble Code (DTC) P2D8F00 that may appear in certain 2025 Audi models. This TSB focuses on resolving instances where an "Engine Oil Pressure Sensor/Switch 'C' Circuit Low" fault is detected, often leading to various warning messages in the instrument cluster. The Audi P2D8F00 oil pressure sensor issue is primarily linked to the control unit calibration, which can cause the fault to be logged without an actual mechanical failure of the sensor.

Symptoms

Owners of affected Audi vehicles may observe the following symptoms related to this issue:

• A general "Warning display in instrument cluster."
• Specific messages such as "oil pressure loss warning display" may activate without cause.
• In some cases, an "emissions control system malfunction display" may also activate, potentially without cause.

These warnings can appear even when there is no underlying mechanical problem, indicating a potential false positive triggered by the control unit's calibration.

Fault Codes / DTCs

When diagnosing the issue, technicians will typically find the following Diagnostic Trouble Code (DTC) logged in the -J623- control unit (address word 0001):

Code	Symptom Code	Description
P2D8F00	17004	Engine Oil Pressure Sensor/Switch “C” Circuit Low

This DTC indicates a low circuit signal from the engine oil pressure sensor, specifically sensor 'C'. The symptom code 17004 further specifies the nature of this particular fault within the diagnostic system.

Technical Background

According to Audi, the event memory entry for DTC P2D8F00 is logged due to the control unit calibration. This suggests that the issue is not necessarily a faulty engine oil pressure sensor itself, but rather an anomaly in how the control unit interprets sensor readings or manages its diagnostic routines. The Audi P2D8F00 oil pressure sensor fault is therefore often a software-related trigger, indicating a calibration anomaly rather than a hardware failure. There is currently no production solution applicable to prevent this issue at the factory level.

Diagnosis and Repair Procedure

For vehicles exhibiting the symptoms and logging the P2D8F00 DTC, Audi outlines a straightforward diagnostic and repair process for technicians:

1. Delete Event Memory: The initial step involves a technician using diagnostic tools to clear the stored fault code P2D8F00 from the vehicle's event memory in the diagnostic log. This action resets the system and allows for re-evaluation of the complaint.
2. Reassess Complaint: After clearing the fault, the vehicle should be monitored to determine if the warning display or DTC P2D8F00 reappears. This step is crucial to confirm if the issue was transient or persistent.
3. Guided Fault Finding: If the event memory entry for the Audi P2D8F00 oil pressure sensor fault is logged again, technicians are instructed to proceed with the event memory according to the Guided Fault Finding procedure. This comprehensive diagnostic process helps pinpoint the root cause if the initial clearing does not resolve the issue, guiding the technician through further troubleshooting steps.

This TSB, identified as 2079097/1, does not specify any parts replacement or software updates, focusing instead on diagnostic steps to address the calibration-related logging of the fault code.

Warranty Information

Audi specifies that warranty claims submitted for payment must adhere to the Audi Warranty Policies and Procedures Manual. All claims are subject to review or audit by Audi Warranty. The service number for this procedure is 1705, and the damage code is 0010. Labor operations covered by this TSB include:

• GFF- Checking and clearing fault codes: This operation is included in existing labor operations under code 0150 0010, with time stated on the diagnostic protocol.
• GFF (Guided Fault Finding): This operation is covered under code 0150 0060, with associated operations detailed in the Service Repair Time (SRT) manual.

Claims should be commented as per TSB 2079097/1 to ensure proper processing.

Important Warnings

Owners should be aware of the following regarding this TSB:

• Out of Warranty: If your vehicle is outside of any warranty coverage, this Technical Service Bulletin is informational only. This means that any diagnostic or repair work performed may not be covered by Audi and could incur costs.
• Future Release: This TSB is listed with a release date of August 29, 2025. This indicates that the information is being made available to technicians in advance, and the issue may pertain to upcoming vehicle models or future diagnostic procedures.

Additional Information

All part and service references provided in this TSB (2079097/1) are subject to change and/or removal. It is always recommended to check with your Audi Parts Department and/or ETKA for the latest information and parts bulletins. Technicians should also consult the Repair Manual for any fasteners, bolts, nuts, and screws that require replacement during the repair process, ensuring all components are reassembled correctly and safely.

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Source: NHTSA ID: 11022709