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JCB Telehandler & Excavator Fault Codes

Searchable database of 50+ JCB fault codes for Loadall telehandlers and JS series excavators. P-codes, hydraulic codes, and machine system codes with detailed troubleshooting.

⚡ JCB Code Series Guide

P-Codes:
Engine system (fuel, sensors, turbo)
100-Series:
Open circuit faults (sensors, solenoids)
200-Series:
Short circuit faults
300-Series:
CAN communication & calibration
⚠️

Important Safety Notice

  • • Stop operations when fault code appears
  • • Record code and symptoms for diagnosis
  • • Check your model: Use serial lookup (Loadall vs JS series)
  • • Use diagnostic tools: Jaltest recommended for detailed scans
Showing 89 codes
P0001
IMV driver fault detected
Fuel System
High
System: Fuel System
Symptom: Reduced performance
Causes: Faulty inlet metering valve or wiring
Fix: Check wiring, replace IMV
P0002
Rail pressure control error (too low)
Rail Pressure
High
System: Rail Pressure
Symptom: Poor performance
Causes: Unstable PID, pump/sensor issues
Fix: Pressure test fuel system, check controller
P0003
Rail pressure control feedback low error
Fuel System
High
System: Fuel System
Symptom: Power loss
Causes: Fuel leaks, pressure issues
Fix: Check for leaks, inspect HPV/IMV drivers
P0016
Cam sensor phase shift
Cam Sensor
Medium
System: Cam Sensor
Symptom: Timing issues
Causes: Sensor misalignment
Fix: Recalibrate cam position
P0045
VNT control fault / Turbo EVRV fault
Turbo
Medium
System: Turbo
Symptom: Reduced performance
Causes: Actuator/wiring issue
Fix: Test EVRV solenoid
P0070
CAN bus message error from engine ECU
CAN Bus
High
System: CAN Bus
Symptom: Communication loss
Causes: CAN wiring fault
Fix: Inspect CAN wiring
P007A
Charge air cooler temperature sensor circuit fault
Charge Air
Medium
System: Charge Air
Symptom: Sensor error
Causes: Sensor circuit issue
Fix: Test TMAP resistance
P007C
Charge air cooler temp sensor circuit low
Charge Air
Medium
System: Charge Air
Symptom: Low signal
Causes: Short to ground
Fix: Replace sensor
P007D
Charge air cooler temp sensor circuit high
Charge Air
Medium
System: Charge Air
Symptom: High signal
Causes: Open circuit
Fix: Check connections
P0087
Rail pressure too low
Fuel Pressure
High
System: Fuel Pressure
Symptom: Strong vibration, unstable idle, power drop, smoke
Causes: Leaks, faulty pump/sensor
Fix: Perform pressure test
P0088
Rail pressure too high
Fuel Pressure
High
System: Fuel Pressure
Symptom: Strong vibration, unstable idle, power drop, excessive smoke
Causes: Regulator stuck
Fix: Relieve and test pressure
P0089
Rail pressure control error
Rail Pressure
High
System: Rail Pressure
Symptom: Performance issues
Causes: PID instability, stuck HPV
Fix: Calibrate, check open loop
P0090
SCV open or short / HPV driver fault
Fuel System
High
System: Fuel System
Symptom: Engine may stop/start intermittently, excessive smoke
Causes: Circuit fault
Fix: Inspect HPV/SCV, replace if needed
P0095
Intake air temperature sensor 2 circuit
IAT Sensor
Medium
System: IAT Sensor
Symptom: Sensor fault
Causes: Faulty TMAP
Fix: Replace sensor
P0097
Intake air temp sensor 2 circuit low
IAT Sensor
Medium
System: IAT Sensor
Symptom: Low signal
Causes: Short circuit
Fix: Inspect wiring
P0098
Intake air temp sensor 2 circuit high
IAT Sensor
Medium
System: IAT Sensor
Symptom: High signal
Causes: Open circuit
Fix: Replace sensor
P0105
Manifold absolute pressure circuit fault
MAP Sensor
Medium
System: MAP Sensor
Symptom: Pressure reading error
Causes: Sensor fault
Fix: Replace TMAP
P0107
Boost pressure sensor low voltage
Boost Pressure
Medium
System: Boost Pressure
Symptom: Smoke
Causes: Open circuit
Fix: Check sensor
P0108
Boost pressure sensor high voltage
Boost Pressure
Medium
System: Boost Pressure
Symptom: Performance loss
Causes: Short circuit
Fix: Replace sensor
P0112
Intake air temp sensor malfunction (low)
IAT Sensor
Medium
System: IAT Sensor
Symptom: Cold start white smoke
Causes: Ground fault, short circuit
Fix: Inspect wiring
P0113
Intake air temp sensor malfunction (high)
IAT Sensor
Medium
System: IAT Sensor
Symptom: Cold start white smoke
Causes: Open circuit
Fix: Replace sensor
P0115
Engine coolant temp sensor circuit fault
Coolant Temp
High
System: Coolant Temp
Symptom: Temp reading error
Causes: Sensor error
Fix: Replace sensor
P0117
Engine coolant temp sensor low
Coolant Temp
High
System: Coolant Temp
Symptom: Smoke at normal temp, unstable idle when cold, hard start
Causes: Ground fault, short circuit
Fix: Test sensor
P0118
Engine coolant temp sensor high
Coolant Temp
High
System: Coolant Temp
Symptom: Smoke at normal temp, unstable idle when cold
Causes: Open circuit
Fix: Replace sensor
P0122
Throttle position sensor low voltage
Throttle Position
Medium
System: Throttle Position
Symptom: Performance issues
Causes: Circuit fault
Fix: Replace TPS
P0123
Throttle position sensor high voltage
Throttle Position
Medium
System: Throttle Position
Symptom: Performance issues
Causes: Open circuit
Fix: Check wiring
P0180
Fuel temperature sensor circuit fault
Fuel Temp
Low
System: Fuel Temp
Symptom: Performance impact
Causes: Sensor fault
Fix: Replace sensor
P0182
Fuel temp sensor low voltage
Fuel Temp
Low
System: Fuel Temp
Symptom: Performance impact
Causes: Short to ground
Fix: Inspect wiring
P0183
Fuel temp sensor high voltage
Fuel Temp
Low
System: Fuel Temp
Symptom: Performance issues
Causes: Open circuit
Fix: Replace sensor
P0190
Fuel rail pressure sensor circuit fault
Rail Pressure
High
System: Rail Pressure
Symptom: Pressure reading error
Causes: Signal drop
Fix: Check sensor
P0192
Fuel pressure sensor low voltage
Rail Pressure
High
System: Rail Pressure
Symptom: Engine may stop, reduced power
Causes: Short circuit
Fix: Test sensor
P0193
Fuel pressure sensor high voltage
Rail Pressure
High
System: Rail Pressure
Symptom: Engine may stop, power drop
Causes: Open circuit
Fix: Replace sensor
P0201
Injector circuit open - Cylinder 1
Injector #1
High
System: Injector #1
Symptom: Reduced power, rough running
Causes: Wiring/resistance fault
Fix: Test injector 1 resistance and wiring
P0202
Injector circuit open - Cylinder 2
Injector #2
High
System: Injector #2
Symptom: Reduced power
Causes: Circuit fault
Fix: Test injector 2
P0203
Injector circuit open - Cylinder 3
Injector #3
High
System: Injector #3
Symptom: Reduced power
Causes: Circuit fault
Fix: Test injector 3
P0204
Injector circuit open - Cylinder 4
Injector #4
High
System: Injector #4
Symptom: Reduced power
Causes: Circuit fault
Fix: Test injector 4
P0219
Engine overspeed condition
Engine Overspeed
High
System: Engine Overspeed
Symptom: Power drop
Causes: Governor malfunction
Fix: Check governor, ECU
P0237
Boost pressure sensor low
Boost Pressure
Medium
System: Boost Pressure
Symptom: Smoke
Causes: Open circuit
Fix: Replace sensor
P0238
Boost pressure sensor high
Boost Pressure
Medium
System: Boost Pressure
Symptom: Performance loss
Causes: Short circuit
Fix: Check wiring
P0299
Low boost pressure
Turbocharger
High
System: Turbocharger
Symptom: Poor performance
Causes: Turbo/wastegate issue
Fix: Check turbo, wastegate
P0335
Crankshaft sensor malfunction (no signal)
Crank Sensor
High
System: Crank Sensor
Symptom: Power drop, white smoke, severe vibration, may stop
Causes: Missing signal
Fix: Replace crank sensor
P0336
Crankshaft sensor signal fault
Crank Sensor
High
System: Crank Sensor
Symptom: Power drop, white smoke, vibration, may stop
Causes: Abnormal signal
Fix: Check timing, replace sensor
P0340
Cam sensor no signal / phase shift
Cam Sensor
High
System: Cam Sensor
Symptom: Timing issues
Causes: Phase shift, lost signal
Fix: Recalibrate cam sensor
101
Crank signal not detected by ECU
Crank Signal
High
System: Crank Signal
Symptom: No start
Causes: Sensor fault
Fix: Check crank sensor
102
Fuel sensor open-circuit
Fuel Sensor
Low
System: Fuel Sensor
Symptom: No fuel reading
Causes: Open circuit
Fix: Replace fuel sensor
103
Engine temperature sensor open-circuit
Engine Temp
Medium
System: Engine Temp
Symptom: No temp reading
Causes: Open circuit
Fix: Replace temp sensor
104
Hydraulic temperature sensor open-circuit
Hydraulic Temp
Low
System: Hydraulic Temp
Symptom: No hydraulic temp
Causes: Open circuit
Fix: Replace sensor
105
Throttle set potentiometer open-circuit
Throttle
High
System: Throttle
Symptom: No throttle control
Causes: Open circuit
Fix: Replace potentiometer
106
Throttle sense potentiometer open-circuit
Throttle
High
System: Throttle
Symptom: Throttle malfunction
Causes: Open circuit
Fix: Replace sensor
107
Oil pressure switch reporting pressure with engine off
Oil Pressure
Medium
System: Oil Pressure
Symptom: False pressure reading
Causes: Stuck switch
Fix: Replace oil pressure switch
202
Fuel level sensor short-circuit
Fuel Sensor
Low
System: Fuel Sensor
Symptom: Incorrect fuel reading
Causes: Short circuit
Fix: Replace fuel sensor
203
Engine temperature sensor short-circuit
Engine Temp
Medium
System: Engine Temp
Symptom: Incorrect temp reading
Causes: Short circuit
Fix: Replace sensor
204
Hydraulic temperature sensor short-circuit
Hydraulic Temp
Low
System: Hydraulic Temp
Symptom: Incorrect hydraulic temp
Causes: Short circuit
Fix: Replace sensor
205
Throttle set potentiometer short-circuit
Throttle
High
System: Throttle
Symptom: Throttle error
Causes: Short circuit
Fix: Replace potentiometer
206
Throttle sense potentiometer short-circuit
Throttle
High
System: Throttle
Symptom: Throttle malfunction
Causes: Short circuit
Fix: Replace sensor
111
Boom lower speed regulation output open-circuit
Boom Control
Medium
System: Boom Control
Symptom: Boom control issue
Causes: Open circuit
Fix: Check boom solenoid wiring
113
Max flow solenoid open-circuit
Flow Control
Medium
System: Flow Control
Symptom: Reduced hydraulic flow
Causes: Open circuit
Fix: Replace max flow solenoid
115
Boom priority solenoid open-circuit
Boom Priority
Medium
System: Boom Priority
Symptom: Boom priority lost
Causes: Open circuit
Fix: Replace solenoid
119
Slew lock solenoid open-circuit
Slew Lock
Medium
System: Slew Lock
Symptom: Slew function affected
Causes: Open circuit
Fix: Replace slew lock solenoid
121
Slew brake solenoid open-circuit
Slew Brake
High
System: Slew Brake
Symptom: Brake malfunction
Causes: Open circuit
Fix: Replace brake solenoid
211
Boom lower speed regulation short-circuit
Boom Control
Medium
System: Boom Control
Symptom: Boom control issue
Causes: Short circuit
Fix: Inspect wiring
213
Max flow solenoid short-circuit
Flow Control
Medium
System: Flow Control
Symptom: Flow control error
Causes: Short circuit
Fix: Replace solenoid
219
Slew lock solenoid short-circuit
Slew Lock
Medium
System: Slew Lock
Symptom: Slew error
Causes: Short circuit
Fix: Replace solenoid
221
Slew brake solenoid short-circuit
Slew Brake
High
System: Slew Brake
Symptom: Brake fault
Causes: Short circuit
Fix: Replace solenoid
161
Stabilizer up solenoid open-circuit
Stabilizer
Medium
System: Stabilizer
Symptom: Stabilizer won't raise
Causes: Open circuit
Fix: Replace stabilizer solenoid
162
Stabilizer down solenoid open-circuit
Stabilizer
Medium
System: Stabilizer
Symptom: Stabilizer won't lower
Causes: Open circuit
Fix: Replace solenoid
163
Stabilizer left solenoid open-circuit
Stabilizer
Medium
System: Stabilizer
Symptom: Left stabilizer malfunction
Causes: Open circuit
Fix: Replace solenoid
164
Stabilizer right solenoid open-circuit
Stabilizer
Medium
System: Stabilizer
Symptom: Right stabilizer malfunction
Causes: Open circuit
Fix: Replace solenoid
261
Stabilizer up solenoid short-circuit
Stabilizer
Medium
System: Stabilizer
Symptom: Stabilizer error
Causes: Short circuit
Fix: Replace solenoid
262
Stabilizer down solenoid short-circuit
Stabilizer
Medium
System: Stabilizer
Symptom: Stabilizer fault
Causes: Short circuit
Fix: Replace solenoid
263
Stabilizer left solenoid short-circuit
Stabilizer
Medium
System: Stabilizer
Symptom: Left stabilizer fault
Causes: Short circuit
Fix: Replace solenoid
264
Stabilizer right solenoid short-circuit
Stabilizer
Medium
System: Stabilizer
Symptom: Right stabilizer fault
Causes: Short circuit
Fix: Replace solenoid
127
Travel change solenoid open-circuit
Travel
Medium
System: Travel
Symptom: Cannot change travel mode
Causes: Open circuit
Fix: Replace travel solenoid
156
Travel flow 3 solenoid open-circuit
Travel
Medium
System: Travel
Symptom: Travel flow reduced
Causes: Open circuit
Fix: Replace solenoid
157
Travel flow 2 solenoid open-circuit
Travel
Medium
System: Travel
Symptom: Travel flow reduced
Causes: Open circuit
Fix: Replace solenoid
158
Gear change solenoid open-circuit
Gear Change
High
System: Gear Change
Symptom: Cannot shift gears
Causes: Open circuit
Fix: Replace gear solenoid
227
Travel change solenoid short-circuit
Travel
Medium
System: Travel
Symptom: Travel error
Causes: Short circuit
Fix: Replace solenoid
258
Gear change solenoid short-circuit
Gear Change
High
System: Gear Change
Symptom: Shift fault
Causes: Short circuit
Fix: Replace solenoid
159
Brake light output open-circuit
Brake Light
Low
System: Brake Light
Symptom: No brake lights
Causes: Open circuit
Fix: Check brake light circuit
167
Park brake solenoid open-circuit
Park Brake
High
System: Park Brake
Symptom: Park brake malfunction
Causes: Open circuit
Fix: Replace park brake solenoid
259
Brake light output short-circuit
Brake Light
Low
System: Brake Light
Symptom: Brake light fault
Causes: Short circuit
Fix: Inspect wiring
267
Park brake solenoid short-circuit
Park Brake
High
System: Park Brake
Symptom: Brake fault
Causes: Short circuit
Fix: Replace solenoid
300
CAN data bus open-circuit
CAN Bus
High
System: CAN Bus
Symptom: Communication loss
Causes: Open circuit
Fix: Check CAN wiring
301
CAN data bus short-circuit
CAN Bus
High
System: CAN Bus
Symptom: Communication failure
Causes: Short circuit
Fix: Inspect CAN bus
302
Throttle calibration points out of range
Throttle Cal
Medium
System: Throttle Cal
Symptom: Throttle error
Causes: Calibration lost
Fix: Recalibrate throttle
305
Machine requires calibration
Calibration
Medium
System: Calibration
Symptom: Functions limited
Causes: Lost calibration
Fix: Perform full calibration
306
Machine calibration lost
Calibration
High
System: Calibration
Symptom: Multiple errors
Causes: EEPROM reset
Fix: Recalibrate machine
308
ECU EEPROM corrupted
ECU
High
System: ECU
Symptom: System errors
Causes: Memory fault
Fix: Replace ECU or reprogram
310
ECU flash memory corrupted
ECU
High
System: ECU
Symptom: ECU malfunction
Causes: Memory corruption
Fix: Reflash or replace ECU

General JCB Fault Code Troubleshooting

  1. Record the code - Note exact code from display or diagnostic tool
  2. Check basic systems - Battery, hydraulic fluid, connections
  3. Consult manual - Codes vary by model (Loadall 535-95 vs JS200)
  4. Use Jaltest - Professional scanner for JCB equipment
  5. Clear and retest - Verify repair resolved the issue

When to Call for Professional Help

  • High severity codes (P0087, P0335, AL10-equivalent)
  • Multiple simultaneous codes
  • CAN communication errors (300-301)
  • ECU/calibration faults (305-310)
  • Safety system codes (brake, stabilizer)

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