Toro 500 EFI Service Manual page 145

Code Fault Description
P0132 O2 Sensor High/SP
P0171 O2 Feedback Below Minimum Correction
P0172 O2 Feedback Exceeds Maximum Correction Excessive fuel rail pressure, MAP or temp sensors out-of-spec
P0219 Engine Over-Speed Condition
P0231 Fuel Pump Relay Circuit Low/SG/Open
P0232 Fuel Pump Relay Circuit High
P0233 Fuel Pump Relay Circuit
P0261 Cylinder Fuel injector Circuit Low/SG
P0262 Cylinder Fuel injector Circuit High
P0263 Cylinder Fuel injector Balance/Open
P0336 Crankshaft Angle Sensor Synchronization
P0337 Crankshaft Angle Sensor Circuit/SG
P0339 Crankshaft Angle Sensor Intermittent/Erratic Sensor or interconnect harness intermittent
P0340 Camshaft Angle Sensor Synchronization
P0341 Camshaft Angle Sensor Circuit/SG
P0342 Camshaft Angle Sensor Intermittent/Erratic Sensor or interconnect harness intermittent
P0480 Fan Relay Control Circuit
P0484 Fan Relay Control Circuit High
P0485 Fan Relay Control Circuit Low/SG/Open
P0500 Vehicle Speed-Sensor
P0508 IAC System Circuit Low/SG
P0509 IAC System Circuit High/Open
P0520 Engine Oil Sensor/Switch
P0562 System Voltage Low
P0563 System Voltage High
P0601 ECU Memory Check-Sum Error
P0615 Starter Relay Circuit
P0616 Starter Relay Circuit Low
P0617 Starter Relay Circuit High
P0630 VIN Not Programmed or Incompatible
P0642 Sensor Power Circuit Low
P0643 Sensor Power Circuit High
P2300 Ignition Coil Primary Circuit Low/SG/Open Coil or interconnect harness open or shorted to chassis ground
P2301 Ignition Coil Primary Circuit High
P2531 Ignition Switch Circuit Low
P2532 Ignition Switch Circuit High
U0155 LCD Gauge to EFI ECM CAN Communica-
tion Lost
U1000 Vehicle Not Registered or Invalid PIN
Entered
U1001 Vehicle Not Registered and Vehicle Limits
Enabled
FUEL OFF Tilt Sensor Activation Code
High: A high voltage condition has been detected
Low: A low voltage condition has been detected
Intermittent: An intermittent circuit condition has been detected
Possible Cause
Sensor or interconnect harness shorted to battery power
Low fuel rail pressure, dirty fuel filter, or dirty injectors
Engine speed (RPM) has exceeded the ECM over-speed setpoint/
limit
Relay has been removed or interconnect harness shorted to chassis
ground
Relay or interconnect harness shorted to battery power
Relay circuit erratic or intermittent
Injector or interconnect harness shorted to chassis ground
Injector or interconnect harness shorted to battery power
Injector has been disconnected or interconnect harness open
Sensor or interconnect harness intermittent
Sensor or interconnect harness shorted to chassis ground
Sensor or interconnect harness intermittent
Sensor or interconnect harness shorted to chassis ground
Relay erratic or intermittent
Relay or interconnect harness shorted to battery power
Primary fan fuse has blown, the primary fan relay has been removed
or interconnect harness shorted to chassis ground
Sensor circuit signal intermittent or missing
IAC interconnect harness shorted to chassis ground
IAC disconnected or the interconnect harness shorted to battery
power
Sensor or interconnect harness erratic or intermittent
Battery charge condition low or the regulator/rectifier output low
Battery cable connections are loose or the regulator/rectifier output
high
Reflash the ECM with the current software version
Start switch/button, starter relay, gear switch or interconnect harness
erratic or intermittent
Start switch/button, starter relay or interconnect harness intermittent
or shorted to chassis ground
Start switch/button, starter relay or interconnect harness intermittent
or shorted to battery power
Verify the LCD gauge and ECM part numbers are correct for the vehi-
cle model number and VIN
One or more of the sensors defective or shorted to chassis ground
One or more of the sensors defective or shorted to battery power
Coil or interconnect harness shorted to battery power
Battery charge condition low or the regulator/rectifier output low
Battery cable connections are loose or the regulator/rectifier output
high
Gauge CAN circuit or interconnect harness intermittent or has failed Correct condition*
An invalid registration PIN has been entered
An invalid registration PIN has been entered
Sensor has been activated
Open: An open circuit condition has been detected
* After correcting the condition, cycle the key switch On-Off-On
**After correcting the condition, cycle the key switch On-Off-On,
Correct condition*
Correct condition*
Correct condition*
Reduce engine speed
Correct condition*
Correct condition*
Correct condition*
Correct condition**
Correct condition**
Correct condition**
Correct condition**
Correct condition**
Correct condition**
Correct condition**
Correct condition**
Correct condition**
Correct condition*
Correct condition*
Correct condition*
Correct condition*, start
and drive the vehicle*
Correct condition*
Correct condition*
Correct condition*
Correct condition*
Correct condition*
Correct ECM software
issue*
Correct condition*
Correct condition*
Correct condition*
Correct gauge and ECM
VIN compatibility issue*
Correct condition*
Correct condition*
Correct condition**
Correct condition**
Correct condition*
Correct condition*
Enter the correct registra-
tion PIN*
Enter the correct registra-
tion PIN*
Restore the vehicle chassis
to an upright position*
start the engine, then cycle the key switch On-Off-On.
Fault Recovery Method
143