Code 0131; Code 0132; Code 0171 - Kohler Command PRO EFI Series Service Manual

EFI SYSTEM

Code 0131

Component: Oxygen Sensor
Fault: O2S 1 Circuit Low Voltage
Condition: Open connection, broken wire or faulty
sensor.
Conclusion: Oxygen Sensor Related
● Sensor connector or wiring problem.
● Sensor contaminated, corroded or
damaged.
● Poor ground path.
● Pin circuit wiring or connectors.
ECU Black pin 10 or 17.
TPS Learn Procedure Incorrect
● Lean condition (check oxygen sensor
signal with VOA and see Oxygen
Sensor section).
Engine wiring harness related such as a
cut wire, broken or pinched.

Code 0132

Component: Oxygen Sensor
Fault: O2S 1 Circuit High Voltage
Condition: Shorted connection or faulty sensor.
Conclusion: Oxygen Sensor Related
● Sensor connector or wiring problem.
● Sensor contaminated or damaged.
● Poor ground path.
● Pin circuit wiring or connectors.
ECU Black pin 10 or Black pin 17.
Engine Wiring Harness Related
● Diff erence in voltage between sensed
voltage and actual sensor voltage.
● Short in wire harness.
48

Code 0171

Component: Fuel System
Fault:
Condition:
Conclusion: Oxygen Sensor Related
KohlerEngines.com
Maximum adaptation limit exceeded
Fuel inlet screen/fi lter plugged, low
pressure at high pressure fuel line, TPS
malfunction, shorted connection, faulty
sensor, low fuel or wrong fuel type.
● Corrosion or poor connection.
● Sensor contaminated or damaged.
● Air leak into exhaust.
● Poor ground path.
● Pin circuit wiring or connectors.
ECU Black pin 10 or Black pin 17.
TPS Sensor Related
● Throttle plate position incorrect during
Learn procedure.
● TPS problem or malfunction.
Engine Wiring Harness Related
● Diff erence in voltage between sensed
voltage and actual sensor voltage.
● Problem in wiring harness.
● ECU-to-harness connection problem.
Systems Related
● Ignition (spark plug, plug wire, ignition
coil).
● Fuel (fuel type/quality, injector, fuel
pressure too low, fuel pump module or
lift pump).
● Combustion air (air cleaner dirty/
restricted, intake leak, throttle bores).
● Base engine problem (rings, valves).
● Exhaust system leak (muffl er, fl ange,
oxygen sensor mounting boss, etc.).
● Fuel in crankcase oil.
62 690 05 Rev. E