Learn more about the Audi P2138 code.
P2138 OBD-II Trouble Code
Understand what P2138 means for your Audi and book diagnostics with our VAG specialists.
What is Code P2138?
When your Audi’s check engine light turns on and shows this code, it means the On-Board Diagnostic (OBD-II) system has detected an issue with Accelerator Pedal Position (APP) assembly failure, Powertrain Control Module (PCM) failure, Throttle Position Sensor (TPS) failure, Wiring issue.
In plain terms, the system that controls your engine timing may not be adjusting correctly, affecting performance and efficiency.
P2138
Accelerator Pedal Position (APP) assembly failure, Powertrain Control Module (PCM) failure, Throttle Position Sensor (TPS) failure, Wiring issue.
P2138 – Technical Description
- Audi OBD-II Code: P2138
- Fault Type: Accelerator Pedal Position (APP) assembly failure
How We Diagnose Audi Fault Code P2138
At VGS Performance, we use dealer-level Audi diagnostic tools to confirm the root cause before any repair work begins. Our diagnostic service includes:
Learn more about our diagnostic services.
FAQs About Code P2138
What does P2138 mean on an Audi?
It indicates a fault with Accelerator Pedal Position (APP) assembly failure, Powertrain Control Module (PCM) failure, Throttle Position Sensor (TPS) failure, Wiring issue.
What does an Audi OBD-II code mean?
Every code points to a specific fault detected by your Audi’s onboard computer. So codes such as P2138helps our Swindon technicians locate issues faster and more accurately.
Can I clear OBD codes myself?
You can clear codes with a scanner, but if the issue hasn’t been properly fixed, the fault will return. It’s best to bring your Audi in so we can diagnose and resolve it correctly.
How do I know if the P2138 code is a Audi-specific?
Codes starting with “P1”, such as P2138, are usually Audi or VAG-specific fault codes. These relate to systems and components unique to the Audi or wider VW Group range. Generic codes beginning with “P0” apply to most manufacturers and cover standard engine and emissions faults.
Audi Models Commonly Affected by Code P2138
The Audi P2138 fault code can appear across a range of models and engines within the Audi lineup. Because many vehicles share similar electronic and timing systems, this code isn’t limited to one particular model.
We’ve seen codes like P2138 appear on cars such as the Audi A3, A4, A5, Q5 and TT, as well as other petrol and diesel variants. In most cases, it’s the engine management system detecting a performance or communication issue that needs to be checked.
Whether you drive a compact Audi A3 or a larger Q-series SUV, our diagnostic equipment can read and interpret the fault accurately. Once identified, we’ll confirm the cause and advise on the best next step to keep your Audi running as it should.
Although the fault details vary, the core issue usually relates to Accelerator Pedal Position (APP) assembly failure, which requires accurate testing and data analysis. We use dealer-level VAG diagnostic tools to monitor live data, verify system performance, and pinpoint the exact cause before carrying out any repairs.
Need Help with Code P2138?
If you’ve scanned your Audi and found P2138 If you’ve scanned your Audi and found P0010, our team can confirm the fault and carry out any repairs needed. We use official VAG equipment to ensure accuracy and reliability.
Other VWGS Services
Online Booking
Book this service with VGS Performance online in just a few clicks. Fast, easy, and instant.
