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SCANNER - DIAGNOSTICO - CODIGOS OBD-ll - Mecanica automotriz

Codigos: OBD II - P2501 al P2550
Relacion de codigos con numeracion que empiezan con: P2

La siguiente lista cubre todos los codigos P2 publicados hasta la fecha
Todos los codigos OBD-II que empiezan con P2, tienen un significado standard, independientemente de la marca o modelo del vehiculo.

Recuerde:
Los codigos que se reportan en la lectura, solo es un reporte de la funcion del sensor; de ninguna manera indica un cambio del mismo. No caiga en la falsa tentacion de cambiarlo por uno nuevo, con la pretension de solucionar el problema.

Antes de ello.
El mecanico debe hacer pruebas de funcionamiento para determinar un posible cambio.

Por lo regular los sensores acusan consecuencias. Ubicar el origen de la falla, es funcion del mecanico o persona calificada [sistema electrico, electronico, alambrado o problemas basicos de funcionamiento del motor].

Los codigos que no empiezan con P2 ; puede ubicarlos en el siguiente enlace: OBD II
P2000 /P2050 P2051 /P2100 P2101 /P2150
P2151 /P2200 P2201 /P2250 P2251 /P2300
P2301 /P2360 P2400 /P2500 P2501 /P2550
P2551 /P2600 P2601 /P2650 P2651 /P2700
P2701/ P2750 P2751/P2B0A ---0000------
Trouble Code Fault location / Ubicacion de Falla Probable cause / Causas Probables
P2501 Alternator waming lamp, L-terminal - circuit high Wiring short to ground, alternator, instrument panel
P2502 Charging system voltage Wiring, alternator, battery
P2503 Charging system - voltage low Wiring, alternator, battery
P2504 Charging system - voltage high Wiring, alternator, battery
P2505 Engine control module (ECM)- supply voltage Wiring fuses, engine control (EC) relay
P2506 Engine control module (ECM)- supply voltage, range/ performance problem Wiring fuses, engine control (EC) relay
P2507 Engine control module (ECM) - supply voltage low Wiring short to ground, fuses, engine control (EC) relay
P2508 Engine control module (ECM) - supply voltage high Charging system
P2509 Engine control module (ECM) - supply voltage intermittent Wiring, fuses, engine control (EC) relay
P250A Engine oil level sensor - circuit malfuntion

Long term fuel trim (LTFT) - range/ performance problem

 Wiring, engine oil level sensor, ECM
Catalytic converter, exhaust leak, injector leakage, HO2S
P250B Engine oil level sensor - circuit range/ performance Wiring, engine oil level sensor, ECM
P250C Engine oil level sensor - circuit low Wiring, engine oil level sensor, ECM
P250D Engine oil level sensor - circuit high Wiring, engine oil level sensor, ECM
P250E Engine oil level sensor - circuit intermittent/ erratic Wiring, engine oil level sensor, ECM
P250F Engine oil level too low Wiring, engine oil level, ECM
P2510 Engine control (EC) relay, sense circuit - range/ performance problem Wiring, fuses, EC relay
P2511 Engine control (EC) relay, sense circuit - circuit intermittent Wiring, poor connection, EC relay
P2512 Event data recorder request - open circuit Wiring
P2513 Event data recorder request - circuit low Wiring short to ground
P2514 Event data recorder request - circuit high Wiring short to positive
P2515 A/C refrigerant pressure sensor B - circuit malfunction Wiring, A/C refrigerant pressure sensor
P2516 A/C refrigerant pressure sensor B - range/ performance  problem Wiring, A/C refrigerant pressure sensor
P2517 A/C refrigerant pressure sensor B - circuit low Wiring short to ground, A/C refrigerant pressure sensor
P2518 A/C refrigerant pressure sensor B - circuit high Wiring short to positive, A/C refrigerant pressure sensor
P2519 A/C request A - circuit malfunction Wiring, A/C control module, A/C master switch, A/C refrigerant pressure switch/sensor
P251A Power take-off (PTO) enable switch - open circuit Wiring, PTO enable switch, ECM
P251B Power take-off (PTO) enable switch - circuit low Wiring, PTO enable switch, ECM
P251C Power take-off (PTO) enable switch - circuit high Wiring, PTO enable switch, ECM
P251D Power take-off (PTO), engine shut-down - open circuit Wiring, ECM
P251E Power take-off (PTO) engine shut-down - circuit low Wiring, ECM
P251F Power take-off (PTO) monitoring, engine shut-off control - circuit high Wiring, ECM
P2520 A/C request A - circuit low Wiring short to ground, A/C control modeule, A/C master switch, A/C refrigerant pressure switch/sensor
P2521 A/C request A - circuit high Wiring short to positive, A/C control module
P2522 A/C request B - circuit malfunction Wiring, A/C control module, A/C master switch, A/C refrigerant pressure switch/sensor
P2523 A/C request B - circuit low Wiring, A/C short to ground, A/C control module, A/C master switch, A/C refrigerant pressure switch/sensor
P2524 A/C request B - circuit high Wiring short to positive A/C control module
P2525 Vacuum reservoir pressure sensor - circuit malfunction Wiring, vacuum reservoir pressure sensor
P2526 Vacuum reservoir pressure sensor - range/ performance problem Wiring, vacuum reservoir pressure sensor, hoses blocked/leaking
P2527 Vacuum reservoir pressure sensor - circuit low Wiring, short to ground, vacuum reservoir pressure sensor
P2528 Vacuum reservoir pressure sensor - circuit high Wiring, short to positive, vacuum reservoir pressure sensor
P2529 Vacuum reservoir pressure sensor - circuit intermittent Wiring, poor connection, vacuum reservoir pressure sensor
P252A Engine oil quality sensor - circuit malfunction Wiring, engine oil quality sensor, ECM
P252B Engine oil quality sensor - circuit range/ performance Wiring, engine oil quality sensor, ECM
P252C Engine oil quality sensor - circuit low Wiring, engine oil quality sensor, ECM
P252D Engine oil quality sensor - circuit high Wiring, engine oil quality sensor, ECM
P252E Engine oil quality sensor - circuit intermittent/ erratic Wiring, engine oil quality sensor, ECM
P252F Engine oil level too high Engine oil level
P2530 Ignition switch, ON position - circuit malfunction Wiring, fuse, ignition switch
P2531 Ignition switch, ON position - circuit low Wiring short to ground, fuse, ignition switch
P2532 Ignition switch, ON position - circuit high Wiring short to positive, fuse ignition switch
P2533 Ignition switch,ON/start position - circuit malfunction Wiring, fuse, ignition switch
P2534 Ignition switch, ON/start position - circuit low Wiring short to ground, fuse, ignition switch
P2535 Ignition switch, ON/start position - circuit high Wiring short to positive, fuse, ignition switch
P2536 Ignition switch, accessory position - circuit malfunction Wiring, fuse, ignition switch
P2537 Ignition switch, accessory position - circuit low Wiring short to ground, fuse, ignition switch
P2538 Ignition switch, accessory position - circuit high Wiring, short to positive, fuse, ignition switch
P2539 Fuel low pressure sensor - circuit malfunction Wiring, fuel low pressure sensor
P253A Power take-off (PTO) monitoring - circuit open Wiring, ECM
P253B Power take-off (PTO) monitoring - circuit range/ performance Wiring, ECM
P253C Power take-off (PTO) monitoring - circuit low Wiring, ECM
P253D Power take-off (PTO) monitoring - circuit high Wiring, ECM
P253E Power take-off (PTO) - sense circuit intermittent malfunction -
P253F Engine oil deteriorated Engine oil
P2540 Fuel low pressure sensor - range/ performance problem Wiring, fuel low pressure sensor
P2541 Fuel low pressure sensor - circuit low Wiring short to ground, fuel low pressure sensor
P2542 Fuel low pressure sensor - circuit high Wiring short to positive, fuel low pressure sensor
P2543 Fuel low pressure sensor - circuit intermittent Wiring, poor connection, fuel low pressure sensor
P2544 Torque management request, input signal A malfunction Wiring, ECM, TCM
P2545 Torque management request, input signal A range/ performance problem Wiring, ECM, TCM
P2546 Torque management request, input signal A - signal low Wiring short to ground, ECM, TCM
P2547 Torque management request, input signal A - signal high Wiring short to positive. ECM, TCM
P2548 Torque management request, input signal B - malfunction Wiring, ECM, TCM
P2549 Torque management request, input signal B - range/ performance problem Wiring, ECM, TCM
P254A Power take-off (PTO) speed selector sensor/switch 1 - open circuit Wiring, PTO speed selector sensor/switch, ECM
P254B Power take-off (PTO) speed selector sensor/switch 1 - circuit range/ performance Wiring, PTO speed selector sensor/switch, ECM
P254C Power take-off (PTO) speed selector sensor/switch 1 - circuit low Wiring, PTO speed selector sensor/switch, ECM
P254D Power take-off (PTO) speed selector sensor/switch 1 - circuit high Wiring, PTO speed selector sensor/switch, ECM
P254E Power take-off PTO) speed selector sensor/switch 1 - circuit intermittent/ erratic Wiring, PTO speed selector sensor/switch, ECM
P254F Bonnet switch - open circuit Wiring, bonnet switch, ECM
P2550 Torque management request, input signal B - signal low Wiring, short to ground, ECM, TCM
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