Volkswagen fault codes
227 distinct codes across 264 real diagnostics on Volkswagen, including the Volkswagen-specific ones no generic code list can decode.
Volkswagen-specific codes
These are manufacturer-specific, which means the same code on another marque is a different fault. That is exactly why they have no page of their own here and no entry in any generic code list: a single description for one of these would be wrong more often than right. Below they are scoped to Volkswagen, ranked by how often we have actually seen them, which is a claim we can stand behind.
| Code | Diagnostics on Volkswagen |
|---|---|
| P1141 | 13 |
| P1171 | 12 |
| P1542 | 12 |
| P1564 | 12 |
| P1565 | 12 |
| P1568 | 12 |
| U1123 | 9 |
| P10A0 | 5 |
| U1121 | 5 |
| U1400 | 5 |
| C1083 | 4 |
| P1643 | 4 |
| P1735 | 4 |
| P176F | 4 |
| B100B | 3 |
| B101C | 3 |
| B1067 | 3 |
| B1079 | 3 |
| B10AF | 3 |
| B1147 | 3 |
| B1455 | 3 |
| B147A | 3 |
| B1862 | 3 |
| C102D | 3 |
| C110B | 3 |
| C1146 | 3 |
| C1147 | 3 |
| C128F | 3 |
| C12BF | 3 |
| P1258 | 3 |
| P1570 | 3 |
| P1690 | 3 |
| P1698 | 3 |
| P16C1 | 3 |
| P1925 | 3 |
| P1937 | 3 |
| P1BD8 | 3 |
| P3100 | 3 |
| U1101 | 3 |
| U1122 | 3 |
| U1940 | 3 |
| B1385 | 2 |
| B138F | 2 |
| B1802 | 2 |
| C1084 | 2 |
| C1831 | 2 |
| P130A | 2 |
| P1553 | 2 |
| P1653 | 2 |
| P1672 | 2 |
| P1853 | 2 |
| P3008 | 2 |
| P3053 | 2 |
| P3101 | 2 |
| U1103 | 2 |
| U12EF | 2 |
| U140B | 2 |
| B1028 | 1 |
| B1038 | 1 |
| B103F | 1 |
To turn one of these into a cause you need the marque, the model and the engine, which is what the tool does. A code on its own is a starting point, not an answer.
Standard codes we see most on Volkswagen
These are standardised, so they mean the same thing on every vehicle and each one has a page of its own. The counts are what we see on Volkswagen specifically.
| Code | What it is | On Volkswagen |
|---|---|---|
| P0299 | Turbocharger underboost condition | 18 |
| P0171 | System too lean, bank 1 | 14 |
| P0087 | Fuel rail/system pressure too low | 7 |
| P0303 | Cylinder 3 misfire detected | 7 |
| P0301 | Cylinder 1 misfire detected | 6 |
| P2015 | Intake manifold runner position sensor circuit range/performance, bank 1 | 6 |
| P0402 | Exhaust gas recirculation flow excessive | 5 |
| P00AF | Turbocharger boost control module performance | 4 |
| P0407 | Exhaust gas recirculation sensor B circuit low | 4 |
| P0684 | Glow plug control module to PCM communication circuit range/performance | 4 |
| B2010 | Not individually documented | 3 |
| B2022 | Not individually documented | 3 |
| P0135 | O2 sensor heater circuit, bank 1 sensor 1 | 3 |
| P0243 | Turbocharger wastegate solenoid A | 3 |
| P0341 | Camshaft position sensor A circuit range/performance, bank 1 | 3 |
| P0403 | Exhaust gas recirculation control circuit | 3 |
| P0568 | Not individually documented | 3 |
| P0671 | Cylinder 1 glow plug circuit | 3 |
| P0DAC | Not individually documented | 3 |
| P2004 | Intake manifold runner control stuck open, bank 1 | 3 |
| P208E | Not individually documented | 3 |
| P20EE | SCR NOx catalyst efficiency below threshold, bank 1 | 3 |
| P2279 | Intake air system leak | 3 |
| P24C6 | Not individually documented | 3 |
| P26F4 | Not individually documented | 3 |
| U0114 | Not individually documented | 3 |
| U029D | Not individually documented | 3 |
| P0101 | Mass or volume air flow circuit range/performance | 2 |
| P0121 | Throttle or pedal position sensor A circuit range/performance | 2 |
| P0234 | Turbocharger overboost condition | 2 |
| P0322 | Ignition or distributor engine speed input circuit, no signal | 2 |
| P0401 | Exhaust gas recirculation flow insufficient | 2 |
| P0420 | Catalyst system efficiency below threshold, bank 1 | 2 |
| P0441 | Evaporative emission system incorrect purge flow | 2 |
| P0562 | System voltage low | 2 |
| P0867 | Not individually documented | 2 |
| P0A7D | Not individually documented | 2 |
| P0A8D | Not individually documented | 2 |
| P0B37 | Not individually documented | 2 |
| P20E8 | Not individually documented | 2 |
What tends to go wrong on Volkswagen
By share of the codes we have seen on this marque. A description of our own caseload, not a reliability ranking.
- Powertrain, manufacturer-specific · 163
- Body, manufacturer-specific · 56
- Bus communication · 50
- Turbo and boost control · 31
- Chassis, manufacturer-specific · 31
- Not yet classified · 27
FAQ
Frequently asked questions
How do I run a diagnosis?
Select the vehicle on Start, click the Diagnostic card and choose New diagnostic. Fill in the description, the error codes and the mileage, then click Analyze.
Learn more: Diagnostic (vehicle-first start), Diagnostic form: description, error codes and mileage
Do I have to type the codes from my scan tool?
No. Click the camera button next to Error codes and take or choose a photo (JPEG or PNG) of the scan tool's screen; WrenchLane reads the codes and their descriptions into the form. You can also speak them with the microphone.
Learn more: OBD reader photo scan (fault codes from a photo), Voice input for the problem description
Are the public fault code pages built from my diagnostics?
They are built from anonymised, aggregated diagnostics run in WrenchLane; no workshop, customer or vehicle can be identified. Each fault code page shows how often the code was seen across those diagnostics and in how many separate workshops.
Learn more: Fault code pages on wrenchlane.com (fault-code cluster)
Decode a Volkswagen code against the actual car
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