Crown forklifts are widely used in warehouses, distribution centers, and manufacturing facilities to efficiently move and transport materials. These powerful machines rely on complex systems to operate smoothly, but like any equipment, they can encounter errors that require attention. Crown has implemented an error code system to aid users in diagnosing and resolving issues promptly. In this article, we will provide you with a comprehensive list of Crown forklift error codes, their meanings, and steps to troubleshoot them.
Common Crown Forklift Error Codes and Solutions
Error Code 002
Meaning: Low Battery Voltage
The error code 002 indicates that the forklift’s battery voltage is lower than the acceptable range.
Solution:
- Check Battery Connection: Ensure that the battery terminals are securely connected. Loose or corroded connections can lead to low voltage issues.
- Inspect Battery Health: Check the battery’s overall health and charge level. If the battery is old or weak, it may need to be replaced.
- Charge the Battery: If the battery voltage is low, charge it using an appropriate charger. Follow proper charging procedures to avoid overcharging.
Error Code 102
Meaning: Hydraulic Oil Temperature High
Error code 102 signals that the hydraulic oil temperature in the forklift is beyond the safe operating range.
Solution:
- Check Hydraulic System: Inspect the hydraulic system for leaks or obstructions that might be causing excessive heat buildup. Repair any leaks and ensure proper fluid circulation.
- Cool Down: Allow the forklift to cool down before resuming operation. Avoid using the forklift if the temperature remains high, as it could lead to further damage.
Error Code 208
Meaning: Accelerator Pedal Position Sensor Fault
Error code 208 indicates a fault with the accelerator pedal position sensor, which is responsible for translating pedal movement into speed control.
Solution:
- Check Sensor Connection: Verify that the accelerator pedal position sensor is securely connected and not damaged. Clean the sensor if necessary.
- Calibrate Sensor: Some errors can be resolved by calibrating the sensor. Refer to the forklift’s user manual for instructions on sensor calibration.
Error Code 332
Meaning: Tilt Forward/Backward Sensor Fault
Error code 332 points to a problem with the tilt forward or backward sensor, which helps control the forklift’s mast tilting.
Solution:
- Inspect Sensors: Check the tilt sensors for any damage or misalignment. Ensure that they are correctly positioned and functioning.
- Calibrate Sensors: Calibration may resolve sensor-related errors. Follow the calibration procedure outlined in the user manual.
Error Code 556
Meaning: Brake Pressure Fault
Error code 556 indicates an issue with the forklift’s brake pressure system.
Solution:
- Check Brake System: Inspect the brake fluid levels and lines for leaks or damage. Address any issues found and refill the brake fluid as needed.
- Bleed the Brakes: If the brake system is not functioning properly, bleeding the brakes may help remove air and restore proper brake pressure.
CROWN Diagnostic Fault Codes (Flash Codes)
DTC – PROBABLE FAULT – FAULT ACTION * – CORRECTIVE ACTION FIRST CHECK
Fault Code: 12
NONE. Signifies the end of one pass through the fault list. NONE. None used as end of the fault list identification
Fault Code: 141 (14)
ECTRangeLow. Coolant Sensor failure or shorted to GND
TurnOnMil. Check ECT sensor connector and wiring for a short to GND
SECM (Signal) Pin B15 To ECT Pin 3 SECM (Sensor GND) Pin B1 to ECT Pin 1
SECM (System GND) Pin A16, B17
Fault Code: 151 (15)
ECTRangeHigh.Coolant sensor disconnected or open circuit.
(1) TurnOnMil
(2) DelayedEngine Shutdown
(3) CheckEngineLight
Check if ECT sensor connector is disconnected or for an open ECT circuit SECM (Signal) Pin B15 to ECT Pin 3 SECM (Sensor GND) Pin B1 to ECT Pin 1
Fault Code: 161 (16)
ECTOverTempFault Engine coolant temperature is high. The sensor has measured an excessive coolant temperature typically due to the engine overheating.
(1) TurnOnMil
(2) DelayedEngine Shutdown
(3) CheckEngineLight
Check coolant system for radiator blockage, proper coolant level and for leaks in the system. Possible ECT short to GND, check ECT signal wiring. SECM (Signal) Pin B15 to ECT Pin 3 SECM (Sensor GND) Pin B1 to
ECT Pin 1 SECM (System GND) Pin A16, B17
Check regulator for coolant leaks
Fault Code: 171
ECT_IR_Fault. Engine coolant temperature not changing as expected
None
Check for coolant system problems, e.g. defective or stuck thermostat
Fault Code: 181
FuelSelectConflict
Conflict in fuel select signals, normally set if both of the fuel select signals are shorted to ground
TurnOnMil
Check fuel select switch connection for a short to GND SECM (SIGNAL) Pin A12 SECM (SIGNAL) Pin A15
SECM (Sensor GND) Pin B1
Fault Code: 193
CrankEdgesFaultNo crankshaft signal when engine is known to be rotating, broken crankshaft sensor leads or defective crank sensor
None
Check Crankshaft sensor connections SECM (SIGNAL) Pin B5 to Crank sensor Pin 3
SECM (Sensor GND) PIN B1 to Crank sensor Pin 2
Switched 12V to Crank sensor Pin 1
Check for defective Crank sensor
DFC – PROBABLE FAULT – FAULT ACTION* – CORRECTIVE ACTION FIRST CHECK
Fault Code: 194
CrankSyncFault
Loss of synchronization on the crankshaft sensor, normally due to noise on the signal or an intermittent connection on the crankshaft sensor
None
Check Crankshaft sensor connections SECM (SIGNAL) Pin B5 to Crank sensor Pin 3
SECM (Sensor GND) Pin B1 to Crank sensor Pin 2
Switched 12V to Crank sensor Pin 1
Check for defective Crank sensor
Fault Code: 221 (22)
TPS1RangeLow
TPS1 sensor voltage out of range low, normally set if the TPS1 signal has shorted to ground, circuit has opened or sensor has failed
TurnOnMil
Check throttle connector connection and TPS1 sensor for an open circuit or short to GND
SECM Pin B23 (signal) to ETC Pin 6 SECM Pin B1 (sensor GND) to
ETC Pin 2
SECM (system GND) Pin A16, B17
Fault Code: 222
TPS2RangeLow
TPS2 sensor voltage out of range low, normally set if the TPS2 signal has shorted to ground, circuit has opened or sensor has failed
TurnOnMil
Check throttle connector connection and TPS2 sensor for an open circuit or short to GND
SECM Pin B4 (signal) to ETC Pin 5 SECM Pin B1 (sensor GND) to ETC Pin 2
SECM (system GND) Pin A16, B17
Fault Code: 231 (23)
TPS1RangeHigh
TPS1 sensor voltage out of range high, normally set if the TPS1 signal has shorted to power or the ground for the sensor has opened
TurnOnMil
Check throttle connector and TPS1 sensor wiring for a shorted circuit SECM Pin B23 (signal) to ETC Pin 6 SECM Pin B1 (sensor GND) to ETC Pin 2
Fault Code: 232
TPS2RangeHigh
TPS2 sensor voltage out of range high, normally set if the TPS2 signal has shorted to power or the ground for
the sensor has opened
TurnOnMil
Check throttle connector and TPS1 sensor wiring for a shorted circuit SECM Pin B4 (signal) to ETC Pin 5
SECM pin B1 (sensor GND) to ETC Pin 2
Fault Code: 241 (24)
TPS1AdaptLoMin
Learned closed throttle end of TPS1 sensor range lower than expected
None
Check the throttle connector and pins for corrosion.
To check the TPS disconnect the throttle connector and measure the resistance from:
TPS Pin 2 (GND) to Pin 6 (TPS1 SIGNAL) (0.7 ± 30%)
TPS Pin 3 (PWR) to Pin 6 (TPS1 SIGNAL) (1.4 ± 30%)
Fault Code: 242
TPS2AdaptLoMin
Learned closed throttle end of TPS2 sensor range lower than expected
None
Check the throttle connector and pins for corrosion.
To check the TPS disconnect the throttle connector and measure the resistance from:
TPS Pin 2 (GND) to Pin 5 (TPS2 SIGNAL) (1.3K ± 30%)
TPS PIN 3 (PWR) to PIN 5 (TPS2 SIGNAL) (0.6K ± 30%)
Fault Code: 251 (25)
TPS1AdaptHiMax Learned WOT end of TPS1 sensor range is higher than expected
None
N/A
Fault Code: 252
TPS2AdaptHiMax Learned WOT end of TPS2 sensor range higher than
expected
None
N/A
Fault Code: 271
TPS1AdaptHiMin
Learned WOT end of TPS1 sensor range lower than expected
None
N/A
Fault Code: 272
TPS2AdaptHiMin
Learned WOT end of TPS2 sensor range lower than expected
None
N/A
Fault Code: 281
TPS1AdaptLoMax
Learned closed throttle end of TPS1 sensor range higher than expected
None
N/A
Fault Code: 282
TPS2AdaptLoMax
Learned closed throttle end of TPS2 sensor range higher
than expected
None
N/A
Fault Code: 291
TPS_Sensors_Conflict TPS sensors differ by more than expected amount NOTE: The TPS is not a serviceable item and can only be repaired by replacing the DV-EV throttle assembly.
(1) TurnOnMil
(2) Engine Shutdown
Perform checks for DFCs 241 & 242
Fault Code: 331 (33)
MAPTimeRangeLow Manifold Absolute Pressure sensor input is low, normally set if the TMAP pressure signal wire has been disconnected or shorted to ground or the circuit has opened to the SECM
None
Check TMAP connector and MAP signal wiring for an open circuit
TMAP Pin 4 to SECM Pin B18 (signal)
TMAP Pin 1 to SECM Pin B1 (sensor GND)
TMAP Pin 3 to SECM Pin B24
(XDRP +5 Vdc)
Check the MAP sensor by disconnecting the TMAP connector and measuring at the sensor
TMAP Pin 1(GND) to Pin 4 (pressure signal KPA) (2.4k – 8.2k)
TMAP Pin 3 (power) to Pin 4 (pressure signal KPA) (3.4k – 8.2k)
Fault Code: 332
MAPRangeLow
Manifold Absolute Pressure sensor input is low, normally set if the TMAP pressure signal wire has been disconnected or shorted to ground or the circuit has opened to the SECM
(1) TurnOnMil
(2) CutThrottle
Check TMAP connector and MAP signal wiring for an open circuit
TMAP Pin 4 to SECM Pin B18 (signal)
TMAP Pin 1 to SECM Pin B1 (sensor GND)
TMAP Pin 3 to SECM Pin B24 (XDRP +5 Vdc)
Check the MAP sensor by disconnecting the TMAP connector and measuring at the sensor:
TMAP Pin 1(GND) to Pin 4 (pressure signal KPA) (2.4k – 8.2k)
TMAP Pin 3 (power) to Pin 4 (pressure signal KPA) (3.4k – 8.2k)
Fault Code: 341 (34)
MAPTimeRangeHigh Manifold Absolute Pressure Sensor Input is High, normally set if the TMAP pressure signal wire has become shorted to power, shorted to the IAT signal, the TMAP has failed or the SECM has failed.
None
Check TMAP connector and MAP signal wiring for a shorted circuit TMAP Pin 4 to SECM Pin B18 (signal)
TMAP Pin 1 to SECM Pin B1 (sensor GND)
TMAP Pin 3 to SECM Pin B24 (XDRP +5 Vdc)
Check the MAP sensor by disconnecting the TMAP connector and measuring at the sensor