Mercedes-Benz fault codes
176 distinct codes across 165 real diagnostics on Mercedes-Benz, including the Mercedes-Benz-specific ones no generic code list can decode.
Mercedes-Benz-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 Mercedes-Benz, ranked by how often we have actually seen them, which is a claim we can stand behind.
| Code | Diagnostics on Mercedes-Benz |
|---|---|
| P13E4 | 6 |
| P3008 | 5 |
| P13DF | 4 |
| P3005 | 4 |
| P13F6 | 3 |
| P1403 | 3 |
| P1BC1 | 3 |
| P1BC2 | 3 |
| P1C7D | 3 |
| P1CE2 | 3 |
| P3009 | 3 |
| B1241 | 2 |
| B181E | 2 |
| C1107 | 2 |
| C1172 | 2 |
| P1187 | 2 |
| P126A | 2 |
| P1860 | 2 |
| P1861 | 2 |
| P3006 | 2 |
| U140A | 2 |
| U1520 | 2 |
| B1000 | 1 |
| B1010 | 1 |
| B1013 | 1 |
| B1249 | 1 |
| B1253 | 1 |
| B142A | 1 |
| B1776 | 1 |
| B18B6 | 1 |
| B1C1F | 1 |
| C107D | 1 |
| C1127 | 1 |
| C1200 | 1 |
| C1526 | 1 |
| C1592 | 1 |
| C1593 | 1 |
| C3266 | 1 |
| C3271 | 1 |
| P101E | 1 |
| P1188 | 1 |
| P1234 | 1 |
| P13E7 | 1 |
| P14B7 | 1 |
| P14CF | 1 |
| P1605 | 1 |
| P1672 | 1 |
| P16C0 | 1 |
| P1876 | 1 |
| U1008 | 1 |
| U1009 | 1 |
| U1127 | 1 |
| U113E | 1 |
| U1160 | 1 |
| U118A | 1 |
| U11A3 | 1 |
| U121A | 1 |
| U1409 | 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 Mercedes-Benz
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 Mercedes-Benz specifically.
| Code | What it is | On Mercedes-Benz |
|---|---|---|
| P0087 | Fuel rail/system pressure too low | 6 |
| P2B2A | Not individually documented | 5 |
| P0016 | Crankshaft/camshaft position correlation, bank 1 sensor A | 4 |
| P0252 | Injection pump fuel metering control A range/performance | 4 |
| P0CEA | Not individually documented | 4 |
| P2463 | Diesel particulate filter restriction, soot accumulation | 4 |
| P2BA9 | Not individually documented | 4 |
| B2206 | Not individually documented | 3 |
| B2752 | Not individually documented | 3 |
| P0011 | A camshaft position timing over-advanced or system performance, bank 1 | 3 |
| P0017 | Crankshaft/camshaft position correlation, bank 1 sensor B | 3 |
| P0101 | Mass or volume air flow circuit range/performance | 3 |
| P0302 | Cylinder 2 misfire detected | 3 |
| P049B | Not individually documented | 3 |
| P052E | Not individually documented | 3 |
| P07E4 | Not individually documented | 3 |
| P0A0A | Not individually documented | 3 |
| P2066 | Fuel level sensor B circuit range/performance | 3 |
| P229E | Not individually documented | 3 |
| U016B | Not individually documented | 3 |
| C0031 | Left front wheel speed sensor circuit | 2 |
| C2060 | Not individually documented | 2 |
| P0095 | Intake air temperature sensor 2 circuit | 2 |
| P0100 | Mass or volume air flow circuit | 2 |
| P0244 | Turbocharger wastegate solenoid A range/performance | 2 |
| P0420 | Catalyst system efficiency below threshold, bank 1 | 2 |
| P0440 | Not individually documented | 2 |
| P060C | Internal control module main processor performance | 2 |
| P0715 | Input or turbine speed sensor A circuit | 2 |
| P0760 | Shift solenoid C | 2 |
| P20D4 | Not individually documented | 2 |
| P2269 | Water in fuel condition | 2 |
| P2279 | Intake air system leak | 2 |
| P246B | Not individually documented | 2 |
| P246F | Not individually documented | 2 |
| P2600 | Coolant pump A control circuit open | 2 |
| U0019 | Low speed CAN communication bus | 2 |
| U0132 | Lost communication with ride level control module | 2 |
| U0428 | Invalid data received from steering angle sensor module | 2 |
| B210A | Not individually documented | 1 |
What tends to go wrong on Mercedes-Benz
By share of the codes we have seen on this marque. A description of our own caseload, not a reliability ranking.
- Powertrain, manufacturer-specific · 60
- Bus communication · 36
- Not yet classified · 30
- Body, manufacturer-specific · 24
- Chassis, manufacturer-specific · 16
- Transmission · 13
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 Mercedes-Benz code against the actual car
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