41 distinct codes across 50 real Toyota diagnostics.
41 distinct codes across 50 real diagnostics on Toyota, including the Toyota-specific ones no generic code list can decode.
Toyota-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 Toyota and ranked by how often we have actually seen them, they are a claim we can stand behind.
- C1201, seen in 2 Toyota diagnostics
- C1377, seen in 2 Toyota diagnostics
- P1443, seen in 2 Toyota diagnostics
- P1A50, seen in 2 Toyota diagnostics
- B1326, seen in 1 Toyota diagnostic
- B132A, seen in 1 Toyota diagnostic
- B1507, seen in 1 Toyota diagnostic
- C1204, seen in 1 Toyota diagnostic
- C1298, seen in 1 Toyota diagnostic
- C1336, seen in 1 Toyota diagnostic
- C1419, seen in 1 Toyota diagnostic
- P1345, seen in 1 Toyota diagnostic
- P1346, seen in 1 Toyota diagnostic
- P1442, seen in 1 Toyota diagnostic
- P1604, seen in 1 Toyota diagnostic
- P1605, seen in 1 Toyota diagnostic
Standard codes we see most on Toyota
These are standardised, so they mean the same thing on every vehicle. The counts are what we see on Toyota specifically.
- P0335, Crankshaft position sensor A circuit
- P0420, Catalyst system efficiency below threshold, bank 1
- P0505, Idle air control system
- P0016, Crankshaft/camshaft position correlation, bank 1 sensor A
- P0031, O2 sensor heater control circuit low, bank 1 sensor 1
- P0037, O2 sensor heater control circuit low, bank 1 sensor 2
- P0350, Ignition coil primary/secondary circuit
- P0400, Exhaust gas recirculation flow
- P0430, Catalyst system efficiency below threshold, bank 2
- P0A0F, Engine failed to start
- P220E, not individually documented
- P0051, O2 sensor heater control circuit low, bank 2 sensor 1
- P008A, Low pressure fuel system pressure too low
- P0093, Fuel system leak detected, large leak
- P00BA, not individually documented
- P0113, Intake air temperature sensor 1 circuit high
- P0136, O2 sensor circuit, bank 1 sensor 2
- P0141, O2 sensor heater circuit, bank 1 sensor 2
- P0154, O2 sensor circuit no activity detected, bank 2 sensor 1
- P0191, Fuel rail pressure sensor circuit range/performance
- P203F, not individually documented
- P2566, Turbocharger boost control position sensor circuit high
What tends to go wrong on Toyota
By share of the codes we have seen on this marque. A description of our own caseload, not a reliability ranking.
- Powertrain, manufacturer-specific, 9 code sightings
- Chassis, manufacturer-specific, 8 code sightings
- Lambda and O2 sensors, 6 code sightings
- Catalytic converter, 5 code sightings
- Valve timing and camshaft, 5 code sightings
- Fuel pressure and delivery, 3 code sightings