Kohler Command PRO ECH630 Service Manual page 62

Section 5
EFI Fuel System
Code: 0031
Component: Oxygen Sensor Heater
Fault: O2S Heater Circuit High Voltage
Condition: System voltage too high, shorted
connection or faulty sensor.
Possible Causes:
1. Oxygen Sensor Related
a. Sensor connector or wiring problem.
b. Sensor damaged.
c. Pin circuit wiring or connectors at Black 7.
2. ECU Related
a. ECU-to-harness connection problem.
Code: 0032
Component: Oxygen Sensor Heater
Fault: O2S Heater Circuit Low Voltage
Condition: System voltage too low, open connection or
faulty sensor.
Possible Causes:
1. Engine Wiring Harness Related
a. Pin circuit wiring or connectors.
1. ECU Black pin 7.
2. Broken wire.
2. Oxygen Sensor Related
a. Sensor connector or wiring problem.
3. Poor system ground from ECU to engine or
batt ery to engine.
Code: 0107
Component: Manifold Absolute Pressure Sensor
Fault: MAP Circuit Low Voltage or Open
Condition: Intake manifold leak, open connection or
faulty sensor.
Possible Causes:
1. MAP Sensor Related
a. Sensor malfunction.
b. Vacuum leaks from loose manifold or sensor.
2. Wire Harness Related
a. Poor grounding or open circuit.
b. Wire harness and connectors loose, damaged
or corroded.
c. Pin circuit wiring or connectors at Black 10, 11
and 16.
3. Bad TPS Learn.
5.30
Code: 0108
Component: Manifold Absolute Pressure Sensor
Fault: MAP Circuit High Voltage
Condition: Intake manifold leak, shorted connection
or faulty sensor.
Possible Causes:
1. MAP Sensor Related
a. Sensor malfunction.
b. Vacuum leaks from loose manifold or sensor.
2. Wire Harness Related
a. Poor grounding.
b. Pin circuit wiring or connectors at Black 11.
3. Bad TPS Learn.
Code: 0112
Component: Intake Air Temperature Sensor
Fault: Intake Air Temperature Sensor
Circuit Low Voltage
Condition: Shorted connection, faulty sensor or
shorted wire.
Possible Causes:
1. Temperature Sensor Related
a. Sensor wiring or connection.
2. Engine Wiring Harness Related
a. Pin circuits Black 10 and Black 8 may be
damaged or routed near noisy signal (coils,
alternator, etc.).
b. ECU-to-harness connection problem.
Code: 0113
Component: Intake Air Temperature Sensor
Fault: Intake Air Temperature Sensor
Circuit High Voltage or Open
Condition: Shorted connection, faulty sensor, broken
wire or connection.
Possible Causes:
1. Temperature Sensor Related
a. Sensor wiring or connection.
2. Engine Wiring Harness Related
a. Pin circuits ECU Black pin 10 and 8 may be
damaged.
b. ECU-to-harness connection problem or
broken wire.