Felkoder Volvo 940

| Code | Meaning | |------|---------| | 1-1-1 | ABS OK | | 1-1-2 | ABS control module internal fault | | 1-2-1 | Front left wheel sensor – no signal | | 1-2-2 | Front right wheel sensor – no signal | | 1-3-1 | Rear left wheel sensor – no signal | | 1-3-2 | Rear right wheel sensor – no signal | | 1-4-3 | Brake pedal switch faulty | | 2-1-1 | Pump motor relay faulty | | 2-1-2 | Main relay faulty |

Often related to the speed sensor or vehicle speed signal. felkoder volvo 940

| Code | Meaning | |------|---------| | 1-1-1 | No faults – System OK | | 1-2-1 | MAF sensor faulty or disconnected | | 1-2-3 | Coolant temperature sensor signal missing | | 1-3-1 | RPM sensor (crank position) signal missing | | 1-3-2 | Battery voltage too high/low (alternator/regulator) | | 2-1-2 | Oxygen sensor (Lambda) faulty or no signal | | 2-2-1 | Fuel trim too lean (vacuum leak, injectors) | | 2-2-3 | Idle air control valve stuck or open circuit | | 2-3-1 | Fuel trim too rich (bad FPR, leaky injector) | | 3-1-1 | Speedometer sensor signal missing | | 3-2-1 | EGR system faulty (if equipped) | | Code | Meaning | |------|---------| | 1-1-1

Can indicate a problem with the knock sensor. felkoder volvo 940