Scan code | Fault location | Probable cause |
PO, P2,UO | Refer to OBO-II trouble code tables | – |
P1115 | Engine coolant temperature (ECT) sensor/intake air temperature (IAT) sensor signal variation | Wiring, ECT sensor, IAT sensor, ECM |
P1411 | Cylinder cut-out solenoid 1 -malfunction | Wiring, cylinder cut-out solenoid, oil pressure, ECM |
P1414 | Cylinder cut-out solenoid 4 -malfunction | Wiring, cylinder cut-out solenoid, oil pressure,ECM |
P1416 | Cylindercut-out solenoid 6 malfunction | Wiring, cylinder cut-out solenoid, oil pressure, ECM |
P1417 | Cylinder cut-out solenoid 7 malfunction | Wiring, cylinder cut-out solenoid, oil pressure, ECM |
P1501 | Vehicle over-speed condition -rear axle speed greater than front axle | Wiring, VSS, mechanical fault, ECM |
P1502 | Vehicle over-speed condition -front axle speed greater than rear axle | Wiring, VSS, mechanical fault, ECM |
P1521 | Engine oil sensor module -malfunction | Wiring, connectors, oil quality, oil level |
P1572 | Brake pedal position (BPP) switch -circuit malfunction | BPP switch adjustment, wiring, BPP switch |
P1573 | Brake pedal position (BPP) switch -circuit malfunction | BPP switch adjustment, wiring, BPP switch |
P1593 | Cruise control system, multi-function input A circuit stuck | Wiring, poor connection, multi-function switch, mechanical fault, ECM |
P1602 | Engine control module (ECM) not programmed | New ECM not programmed, incorrectly programmed, ECM |
P1603 | Engine control module (ECM) -malfunction | Wiring, fuse(s), ECM |
P1604 | Engine control module (ECM) -RAM read/writeerror | ECM |
P1607 | Engine control module (ECM) -shut down timer error | ECM |
P1618 | Engine control module (ECM) -primary 5 volt output erratic | Wiring, poor connection, oil pressure sensor, APP sensor, CKP sensor, throttle control unit, TPS sensor, ECM |
P1628 | Engine control module (ECM) -auxiliary 5 volt output erratic | Wiring, poor connection, APP sensor, CMP sensor,EGR solenoid, EGR valve position sensor, MAP sensor, ECM |
P1646 | Engine coolant hydraulic blower motor solenoid/circuit high -circuit malfunction | Wiring, fuse, engine coolant hydraulic blower motorsolenoid, ECM |
P1647 | Engine coolant hydraulic blower motorsolenoid/circuit low -circuit malfunction | Wiring, fuse, engine coolant hydraulic blower motor solenoid, ECM |
P1648 | Glow plug control module/supply circuit circuit malfunction | Wiring, fuse, ECM |
P1696 | Engine control module (ECM) -EEPROM error | ECM |
P1697 | Engine control module (ECM) -EEPROM error | ECM |
U110A | Controller area network (CAN) data buscommunication malfunction | Wiring, steering column control module, multifunction control module, ECM |
U110C | Controller area network (CAN) data bus communication malfunction | Wiring, fuel level sensor, multifunction control module, ECM |
U110E | Outside air temperature sensor communication malfunction | Wiring, outside air temperature sensor, multifunction control module, ECM |
U1110 | Wheel speed sensor -communication malfunction | Wiring, speed sensor, anti-lock brake system (ABS) control module, ECM |
U1111 | Controller area network (CAN) data buscommunication malfunction | Wiring, multifunction control module, ECM |
U1113 | AlC pressure sensor -communication malfunction | Wiring, multifunction control module, ECM |
U1120 | Wheel speed sensor -communication malfunction | Wiring, speed sensor, anti-lock brake system (ASS) control module, ECM |
U1403 | Control area network (CAN) data bus -fuel level -signal implausible | Wiring, instrument panel, multifunction control module, ECM |
U1411 | Controller area network (CAN) data bus/fuel level -communication malfunction | Wiring, instrumentation control module,multifunction control module, ECM |
U1412 | Wheel speed sensor -CAN data communication malfunction | Wiring, wheel speed sensor, ABS control module,ECM |
U1413 | Controller area network (CAN) data buslinstrument panel -signal implausible | Wiring, instrumentation control module,multifunction control module, ECM |
U1417 | Wheel speed sensor, left -CAN data communication malfunction | Wiring, wheel speed sensor, ASS control module,ECM |
U1418 | Wheel speed sensor, right -CAN data communication malfunction | Wiring, wheel speed sensor, ASS control module, ECM |