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Hyundai Fault Codes List & Code Lookup

Look up 251 Hyundai fault codes and error codes, in plain English. Find your code below, then hand it to the AI assistant for what it means and the first things to check.

Full Hyundai fault code list

A generic J1939 reader pulls 1 of these; the other 250 need Hyundai tooling to read in full. Every listed code is below, in code order, 100 to a page.

Codes on file

251

Readable as J1939 SPN/FMI

1

Hyundai-specific

250

  • 100Oil pressure switch disconnection
  • 101Hydraulic oil temp sensor circuit voltage high or open
  • 102EGR low pressure sensor excessive output
  • 105Working pressure sensor data exceeds normal range.
  • 108Travel oil pressure sensor data exceeds normal range.
  • 110Engine coolant temperature sensor excessive output
  • 120P1 pump delivery pressure voltage exceeds 5.2V
  • 1202Immobilizer system error
  • 1209EGR high pressure sensor excessive output
  • 121P2 pump delivery pressure voltage exceeds 5.2V
  • 125Pilot pump pressure sensor data high
  • 127Boom up pilot pressure voltage exceeds 5.2V
  • 128Boom down pilot pressure voltage exceeds threshold
  • 129Arm in pilot pressure voltage exceeds 4.8V
  • 138Attachment pilot pressure sensor data high
  • 140Pump EPPR valve circuit current low
  • 1485Main relay contact sticking
  • 150Left rotate EPPR valve circuit current low
  • 152Left tilt EPPR valve circuit current low
  • 157Rail pressure sensor voltage high
  • 16Travel fwd pilot pressure sensor voltage above normal.
  • 166Power max solenoid circuit current low
  • 167Travel speed solenoid circuit current low
  • 168Attachment pressure solenoid circuit current low
  • 169Attachment confl ux solenoid circuit current low
  • 170Arm regeneration solenoid circuit current low
  • 171Attachment safety solenoid circuit current low
  • 172Boom up lever solenoid circuit voltage low or open
  • 173Boom down lever solenoid circuit voltage low or open
  • 174Bucket lever solenoid circuit voltage low or open
  • 181Engine cooling fan reverse solenoid circuit voltage low or open
  • 183Cooling fan reverse status signal circuit voltage low or open
  • 190Engine overspeed detected
  • 202Steering pump pressure sensor data high or open
  • 203Emergency steering pump pressure sensor data high or open
  • 204Boom cylinder pressure sensor data high or open
  • 205Bucket cylinder pressure sensor data high or open
  • 211Specific fault code for Hyundai excavators.
  • 237VI_ reception timeout
  • 275Hydraulic tank fault detected.
  • 2791Feedback error detected
  • 2797Injector drive circuit Bank1 short circuit
  • 2798Injector drive circuit Bank2 short circuit
  • 29Accelerator sensor 3 voltage high
  • 2950Throttle valve drive circuit no-load
  • 2951Throttle valve drive output 2 short circuit
  • 301Fuel level sensor circuit voltage high or open
  • 304Engine coolant temp sensor circuit voltage high or open
  • 310Engine speed signal error - abnormal frequency
  • 318Cooling fan speed signal error - abnormal frequency
  • 3242DPF inlet temperature sensor excessive output
  • 3250DPF intermediate temperature sensor excessive output
  • 327Anti-restart relay circuit voltage low or open
  • 340Potentiometer circuit voltage high
  • 341Governor actuator circuit current low
  • 346Engine power mode selector circuit voltage high or open
  • 3609DPF high pressure sensor excessive output
  • 3719Regeneration failure (recovery regeneration failure)
  • 4257Injector drive IC error
  • 4795DPF substrate/differential pressure sensor error
  • 499Hydraulic system fault detected.
  • 501Transmission oil pressure sensor data high
  • 503Brake pressure sensor data exceeds normal range.
  • 505Working brake pressure sensor data exceeds normal range.
  • 506Working brake lamp circuit voltage high
  • 507Parking oil pressure sensor data high or open
  • 51Intake throttle position sensor fault detected.
  • 520Ram lock lamp circuit voltage high
  • 522183EGR initialization error
  • 522184EGR high temperature thermistor error
  • 522243Starting aid relay disconnection
  • 522323Air cleaner blockage alarm
  • 522329Oily water separator alarm
  • 522400Crankshaft speed sensor fault detected.
  • 522401Abnormal signal error detected.
  • 522465Injector No.4 correction value error
  • 522571Lo-side short-circuit with power supply
  • 522572SCV drive current high level
  • 522573Excessive PM accumulation (method C)
  • 522574Excessive PM accumulation (method P)
  • 522575Regeneration failure (stationary regeneration failure)
  • 522576EEPROM memory reading error
  • 522577Regeneration failure (stationary not performed)
  • 522578EEPROM memory writing error
  • 522579Short circuit in EGR motor coils
  • 522580EGR position sensor error
  • 522581EGR valve sticking error
  • 522585CY 146 SPI communication fault
  • 522588Excessive voltage of supply 1
  • 522589Insufficient voltage of supply 1
  • 522590Sensor supply voltage error 1
  • 522591Sensor supply voltage error 2
  • 522592Sensor supply voltage error 3
  • 522596TSC1 (SA1) reception timeout
  • 522597TSC1 (SA2) reception timeout
  • 522599CAN2 Y_ECR 1 timeout error
  • 522600CAN2 Y_EC timeout error
  • 522601CAN2 Y_RSS timeout error
  • 522602CAN2 Y_ECM 3 timeout error
  • 522603CAN2 VH timeout error

Fault code lists by brand

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