2022-2024 Audi A4/A5 DTC P008700 P014800 Stored in ECM

Symptoms

Owners of 2022-2024 Audi A4, A4 allroad, and A5 models may observe specific warning lights in their instrument cluster. These include the "MIL / exhaust emission lamp lights up in the instrument cluster." Additionally, the "Drive system: malfunction lamp lights up in the instrument cluster" may illuminate, indicating a potential issue with the vehicle's powertrain.

Fault Codes / DTCs

When these symptoms occur, workshop findings indicate that one or more of the following Diagnostic Trouble Codes (DTCs) are typically stored in the Engine Control Module (ECM), specifically J623 (address word 001):

• P008700: Fuel Rail/System Pressure - Too Low (with symptom code 15058)
• P008700: Fuel Rail/System Pressure - Too Low (with symptom code 15059)
• P014800: Fuel Delivery Error (with symptom code 40466)

Diagnosis and Technical Background

Audi Technical Service Bulletin 2075223/2, which supersedes previous bulletin 24-72, outlines a specific diagnostic approach for these conditions. Audi notes that various parts have been replaced under warranty for the condition described above, but these replacements have not consistently resolved the underlying issues.

To gain more information and ensure proper diagnosis, Audi is requesting that technicians contact the Audi Technical Assistance Center (TAC) before replacing any parts. If the vehicle is within its New Vehicle Limited Warranty, technicians are instructed to perform specific tests as per the ELSA Repair Manual. These tests include "Checking fuel delivery rate", "Pressure test in the fuel supply line", and "Checking residual pressure". The DTCs, diagnostic logs, and photos of the test results must be attached to the TAC ticket or TAC Web Ticket for review.

Important Notes for Owners

Audi states that "No changes to production have been made" regarding this condition, indicating that no manufacturing defect has been identified. This Technical Service Bulletin 2075223/2 is primarily an informational guide for technicians. It is noted that this TSB "is not applicable to any Audi Warranty," which means while diagnostic steps are outlined for vehicles under New Vehicle Limited Warranty, the TSB itself does not extend or guarantee warranty coverage for any subsequent repairs if your vehicle is outside of its New Vehicle Limited Warranty period. Owners should not expect a recall notification for this issue, as TSBs are internal communications for dealers.

Owner Action

If your 2022-2024 Audi A4 or A5 displays a "MIL" or "Drive system: malfunction" light, especially if you suspect or have confirmed the presence of the Audi A5 DTC P008700 P014800 codes, it is recommended to schedule an appointment with an authorized Audi dealer. Be prepared to describe the symptoms you've observed. The dealer will follow the procedures outlined in TSB 2075223/2, which involves contacting Audi's Technical Assistance Center for guidance before proceeding with any part replacements or repairs.

Source: NHTSA ID: 11009930