Mercedes-Benz fault codes

144 distinct codes across 140 real Mercedes-Benz diagnostics.

144 distinct codes across 140 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 and no entry in any generic code list. Scoped to Mercedes-Benz and ranked by how often we have actually seen them, they are a claim we can stand behind.

  • P13E4, seen in 6 Mercedes-Benz diagnostics
  • P13DF, seen in 4 Mercedes-Benz diagnostics
  • P3005, seen in 4 Mercedes-Benz diagnostics
  • P3008, seen in 4 Mercedes-Benz diagnostics
  • P13F6, seen in 3 Mercedes-Benz diagnostics
  • P1403, seen in 3 Mercedes-Benz diagnostics
  • P1BC1, seen in 3 Mercedes-Benz diagnostics
  • P1BC2, seen in 3 Mercedes-Benz diagnostics
  • B1241, seen in 2 Mercedes-Benz diagnostics
  • C1107, seen in 2 Mercedes-Benz diagnostics
  • C1172, seen in 2 Mercedes-Benz diagnostics
  • P1187, seen in 2 Mercedes-Benz diagnostics
  • P126A, seen in 2 Mercedes-Benz diagnostics
  • P1C7D, seen in 2 Mercedes-Benz diagnostics
  • P1CE2, seen in 2 Mercedes-Benz diagnostics
  • P3006, seen in 2 Mercedes-Benz diagnostics
  • P3009, seen in 2 Mercedes-Benz diagnostics
  • U140A, seen in 2 Mercedes-Benz diagnostics
  • U1520, seen in 2 Mercedes-Benz diagnostics
  • B1000, seen in 1 Mercedes-Benz diagnostic
  • B1013, seen in 1 Mercedes-Benz diagnostic
  • B1249, seen in 1 Mercedes-Benz diagnostic
  • B1253, seen in 1 Mercedes-Benz diagnostic
  • B142A, seen in 1 Mercedes-Benz diagnostic
  • B181E, seen in 1 Mercedes-Benz diagnostic
  • B1C1F, seen in 1 Mercedes-Benz diagnostic
  • C107D, seen in 1 Mercedes-Benz diagnostic
  • C1127, seen in 1 Mercedes-Benz diagnostic
  • C1200, seen in 1 Mercedes-Benz diagnostic
  • C1526, seen in 1 Mercedes-Benz diagnostic
  • C1593, seen in 1 Mercedes-Benz diagnostic
  • C3266, seen in 1 Mercedes-Benz diagnostic
  • C3271, seen in 1 Mercedes-Benz diagnostic
  • P101E, seen in 1 Mercedes-Benz diagnostic
  • P1188, seen in 1 Mercedes-Benz diagnostic
  • P1234, seen in 1 Mercedes-Benz diagnostic
  • P14B7, seen in 1 Mercedes-Benz diagnostic
  • P14CF, seen in 1 Mercedes-Benz diagnostic
  • P1672, seen in 1 Mercedes-Benz diagnostic
  • P16C0, seen in 1 Mercedes-Benz diagnostic
  • P1860, seen in 1 Mercedes-Benz diagnostic
  • P1861, seen in 1 Mercedes-Benz diagnostic
  • P1876, seen in 1 Mercedes-Benz diagnostic
  • U1008, seen in 1 Mercedes-Benz diagnostic
  • U1127, seen in 1 Mercedes-Benz diagnostic
  • U1160, seen in 1 Mercedes-Benz diagnostic
  • U118A, seen in 1 Mercedes-Benz diagnostic
  • U11A3, seen in 1 Mercedes-Benz diagnostic
  • U1409, seen in 1 Mercedes-Benz diagnostic

Standard codes we see most on Mercedes-Benz

These are standardised, so they mean the same thing on every vehicle. The counts are what we see on Mercedes-Benz specifically.

  • P0087, Fuel rail/system pressure too low
  • P2B2A, not individually documented
  • P0016, Crankshaft/camshaft position correlation, bank 1 sensor A
  • P0252, Injection pump fuel metering control A range/performance
  • P0CEA, not individually documented
  • P2BA9, not individually documented
  • B2752, not individually documented
  • P0017, Crankshaft/camshaft position correlation, bank 1 sensor B
  • P052E, not individually documented
  • P07E4, not individually documented
  • P0A0A, not individually documented
  • P2066, Fuel level sensor B circuit range/performance
  • P229E, not individually documented
  • U016B, not individually documented
  • C0031, Left front wheel speed sensor circuit
  • C2060, not individually documented
  • P0011, A camshaft position timing over-advanced or system performance, bank 1
  • P0095, Intake air temperature sensor 2 circuit
  • P0100, Mass or volume air flow circuit
  • P0101, Mass or volume air flow circuit range/performance
  • P0244, Turbocharger wastegate solenoid A range/performance
  • P0302, Cylinder 2 misfire detected
  • P0420, Catalyst system efficiency below threshold, bank 1
  • P0440, not individually documented
  • P060C, Internal control module main processor performance
  • P0715, Input or turbine speed sensor A circuit
  • P0760, Shift solenoid C
  • P2269, Water in fuel condition
  • P2279, Intake air system leak
  • U0019, Low speed CAN communication bus
  • U0132, Lost communication with ride level control module
  • U0428, Invalid data received from steering angle sensor module
  • B210A, not individually documented
  • B210D, not individually documented
  • P0014, B camshaft position timing over-advanced or system performance, bank 1
  • P0048, Turbocharger boost control solenoid circuit high
  • P00AF, Turbocharger boost control module performance
  • P0171, System too lean, bank 1
  • P0204, Injector circuit open, cylinder 4
  • P0207, Injector circuit open, cylinder 7

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, 52 code sightings
  • Bus communication, 32 code sightings
  • Not yet classified, 18 code sightings
  • Body, manufacturer-specific, 18 code sightings
  • Chassis, manufacturer-specific, 15 code sightings
  • Fuel pressure and delivery, 11 code sightings