Kohler KG2204T

TP-6903 5/16a Diagnostic Troubleshooting Codes 31
P-Code SPN FMI Description Possible Cause Corrective Action
P0642 3509 4 Sensor Reference
Voltage A Circuit Low
 Problem with 5 V
sensor power supply
circuit. Power supply
is less than 4.6 V.
 Check electrical connection at
ECM for sensor power supply
circuit.
 Check for sensor power supply
circuit shorts to ground.
 Check for shorts by disconnecting
the TMAP and TP sensors.
Monitor the sensor power supply
while reconnecting the sensors
one at a time. If the voltage falls
when a sensor is added, replace
that sensor. Refer to Section 5.
P0643 3509 3 Sensor Reference
Voltage A Circuit High
 Problem with 5 V
sensor power supply
circuit. Power supply
is above 5.4 V.
 Check electrical connection at
ECM for sensor power supply
circuit.
 Check for a short circuit to battery
voltage or open circuit in sensor
ground wire.
 Check for shorts by disconnecting
the TMAP and TP sensors.
Monitor the sensor power supply
while reconnecting the sensors
one at a time. If the voltage rises
when a sensor is added, replace
that sensor. Refer to Section 5.
P0646 876 4 A/C Clutch Relay
Control Circuit Low
 Not applicable  Not applicable
P0647 876 3 A/C Clutch Relay
Control Circuit High
 Not applicable  Not applicable
P0650 1213 31 Malfunction Indicator
Lamp (MIL) Control
Circuit
 Not applicable  Not applicable
P0652 3510 4 Sensor Reference
Voltage B Circuit Low
 Problem with 5 V
sensor power supply
circuit. Power supply
is less than 4.6 V.
 Check electrical connection at
ECM for sensor power supply
circuit.
 Check for sensor power supply
circuit shorts to ground.
 Check for shorts by disconnecting
the TMAP and TP sensors.
Monitor the sensor power supply
while reconnecting the sensors
one at a time. If the voltage falls
when a sensor is added, replace
that sensor. Refer to Section 5.
P0653 3510 3 Sensor Reference
Voltage B Circuit High
 Problem with 5 V
sensor power supply
circuit. Power supply
is above 5.4 V.
 Check electrical connection at
ECM for sensor power supply
circuit.
 Check for a short circuit to battery
voltage or open circuit in sensor
ground wire.
 Check for shorts by disconnecting
the TMAP and TP sensors.
Monitor the sensor power supply
while reconnecting the sensors
one at a time. If the voltage rises
when a sensor is added, replace
that sensor. Refer to Section 5.
P0654 836 31 Engine RPM Output
Circuit
 Not applicable  Not applicable
P0655 623 31 Overheat Lamp Circuit
 Not applicable  Not applicable