Toyota fault codes
12,945 codes · 876 vehicle records · 1,973 ECU records · 43,462 live-data parameters
Codes 12,945
| Code | Description | Brands | System |
|---|---|---|---|
| P2521 | A/C Request A Circuit High | 28 | Powertrain |
| P2522 | A/C Request B Circuit | 24 | Powertrain |
| P2523 | A/C Request B Circuit Low | 22 | Powertrain |
| P2524 | A/C Request B Circuit High | 23 | Powertrain |
| P2525 | Vacuum reservoir pressure sensor circuit | 24 | Powertrain |
| P2526 | Vacuum reservoir pressure sensor circuit range/performance | 24 | Powertrain |
| P2527 | Vacuum reservoir pressure sensor circuit low | 28 | Powertrain |
| P2528 | Vacuum reservoir pressure sensor circuit high | 26 | Powertrain |
| P2529 | Vacuum reservoir pressure sensor circuit intermittent | 24 | Powertrain |
| P252A | Engine oil quality sensor circuit | 19 | Powertrain |
| P252B | Engine oil quality sensor circuit range/performance | 20 | Powertrain |
| P252C | Engine oil quality sensor circuit low | 19 | Powertrain |
| P252D | Engine oil quality sensor circuit high | 19 | Powertrain |
| P252E | Engine Oil Quality Circuit Intermittent/Erratic | 19 | Powertrain |
| P252F | Engine oil level too high | 22 | Powertrain |
| P2530 | Ignition Switch Run Position Circuit | 28 | Powertrain |
| P2531 | Ignition Switch Run Position Circuit Low | 31 | Powertrain |
| P2532 | Ignition Switch Run Position Circuit High | 31 | Powertrain |
| P2533 | Ignition Switch On/Start Position Circuit | 33 | Powertrain |
| P2534 | Ignition Switch On/Start Position Circuit Low | 28 | Powertrain |
| P2535 | Ignition switch ON/START position circuit high | 30 | Powertrain |
| P2536 | Ignition switch accessory position circuit | 26 | Powertrain |
| P2537 | Ignition switch accessory position circuit low | 27 | Powertrain |
| P2538 | Ignition switch accessory position circuit high | 28 | Powertrain |
| P2539 | Low pressure fuel system sensor circuit | 29 | Powertrain |
| P253A | PTO sense circuit/open | 20 | Powertrain |
| P253B | PTO sense circuit range/performance | 19 | Powertrain |
| P253C | PTO sense circuit low | 19 | Powertrain |
| P253D | PTO sense circuit high | 22 | Powertrain |
| P253E | PTO sense circuit intermittent/erratic | 20 | Powertrain |
| P253F | Engine oil deteriorated | 24 | Powertrain |
| P2540 | Low pressure fuel system sensor circuit range/performance | 25 | Powertrain |
| P2541 | Low pressure fuel system sensor circuit low | 27 | Powertrain |
| P2542 | Low pressure fuel system sensor circuit high | 25 | Powertrain |
| P2543 | Low pressure fuel system sensor circuit intermittent | 23 | Powertrain |
| P2544 | Torque Management Request Input Signal A | 29 | Powertrain |
| P2545 | Torque Management Request Input Signal A Range/Performance | 28 | Powertrain |
| P2546 | Torque Management Request Input Signal A Low | 24 | Powertrain |
| P2547 | Torque Management Request Input Signal A High | 25 | Powertrain |
| P2548 | Torque Management Request Input Signal B | 26 | Powertrain |
| P2549 | Torque Management Request Input Signal B Range/Performance | 23 | Powertrain |
| P254A | PTO speed selector sensor/switch 1 circuit/open | 19 | Powertrain |
| P254B | PTO speed selector sensor/switch 1 range/performance | 19 | Powertrain |
| P254C | PTO speed selector sensor/switch 1 circuit low | 19 | Powertrain |
| P254D | PTO speed selector sensor/switch 1 circuit high | 22 | Powertrain |
| P254E | PTO speed selector sensor/switch 1 circuit intermittent/erratic | 19 | Powertrain |
| P254F | Front hood cover switch failure | 25 | Powertrain |
| P2550 | Torque Management Request Input Signal B Low | 23 | Powertrain |
| P2551 | Torque Management Request Input Signal B High | 24 | Powertrain |
| P2552 | Throttle/Fuel Inhibit Circuit | 27 | Powertrain |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.