P0420 Volkswagen Code Definition Catalyst System Efficiency Below Threshold Symptoms Check Engine Light will illuminate In most cases, there are no adverse conditions noticed by the driver In some cases, there may be some performance problems noticed by the driver
P0420 Volkswagen Code Definition Catalyst System Efficiency Below Threshold Symptoms: Check Engine Light will illuminate In most cases, there are no adverse conditions noticed by the driver In some cases, there may be some performance problems noticed by the driver
U300F Volkswagen Ignition Input Accessory OBD Code: System: Subsystem: U300F Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Ignition Input Accessory Location: Analysis: Possible Causes: Tech description: Volkswagen Vehicle:Volkswagen CC,Volkswagen Eos,Volkswagen
U3010 Volkswagen Ignition Input Start OBD Code: System: Subsystem: U3010 Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Ignition Input Start Location: Analysis: Possible Causes: Tech description: Volkswagen Vehicle:Volkswagen CC,Volkswagen Eos,Volkswagen
U300D Volkswagen Ignition Input On / Start OBD Code: System: Subsystem: U300D Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Ignition Input On / Start Location: Analysis: Possible Causes: Tech description:
U300E Volkswagen Ignition Input On OBD Code: System: Subsystem: U300E Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Ignition Input On Location: Analysis: Possible Causes: Tech description: Volkswagen Vehicle:Volkswagen CC,Volkswagen Eos,Volkswagen
U300A Volkswagen Ignition Switch OBD Code: System: Subsystem: U300A Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Ignition Switch Location: Analysis: Possible Causes: Tech description: Volkswagen Vehicle:Volkswagen CC,Volkswagen Eos,Volkswagen Golf,Volkswagen GTI,Volkswagen
U300B Volkswagen Ignition Input Accessory / On / Start OBD Code: System: Subsystem: U300B Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Ignition Input Accessory / On / Start Location: Analysis: Possible Causes:
U300C Volkswagen Ignition Input Off / On / Start OBD Code: System: Subsystem: U300C Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Ignition Input Off / On / Start Location: Analysis: Possible Causes:
U3009 Volkswagen Control Module Ground B OBD Code: System: Subsystem: U3009 Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Control Module Ground B Location: Analysis: Possible Causes: Control Module G Tech description:
U3007 Volkswagen Control Module Input Power B OBD Code: System: Subsystem: U3007 Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Control Module Input Power B Location: Analysis: Possible Causes: Input Power B
U3008 Volkswagen Control Module Ground A OBD Code: System: Subsystem: U3008 Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Control Module Ground A Location: Analysis: Possible Causes: Control Module G Tech description:
U3004 Volkswagen Accessory Power Relay OBD Code: System: Subsystem: U3004 Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Accessory Power Relay Location: Analysis: Possible Causes: Relay Control Circuit Tech description: Volkswagen Vehicle:Volkswagen
U3005 Volkswagen Retained Accessory Power OBD Code: System: Subsystem: U3005 Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Retained Accessory Power Location: Analysis: Possible Causes: Tech description: Volkswagen Vehicle:Volkswagen CC,Volkswagen Eos,Volkswagen
U3006 Volkswagen Control Module Input Power A OBD Code: System: Subsystem: U3006 Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Control Module Input Power A Location: Analysis: Possible Causes: Input Power A
U3002 Volkswagen Vehicle Identification Number OBD Code: System: Subsystem: U3002 Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Vehicle Identification Number Location: Analysis: Possible Causes: Tech description: Volkswagen Vehicle:Volkswagen CC,Volkswagen Eos,Volkswagen
U3003 Volkswagen Battery Voltage OBD Code: System: Subsystem: U3003 Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Battery Voltage Location: Analysis: Possible Causes: Tech description: Volkswagen Vehicle:Volkswagen CC,Volkswagen Eos,Volkswagen Golf,Volkswagen GTI,Volkswagen
U2523 Volkswagen Communication error to PCM Volkswagen Vehicle:Volkswagen CC,Volkswagen Eos,Volkswagen Golf,Volkswagen GTI,Volkswagen Jetta,Volkswagen New Beetle,Volkswagen Passat,Volkswagen Routan,Volkswagen Tiguan,Volkswagen Touareg,Volkswagen Beetle,Volkswagen Golf,Volkswagen Polo,Volkswagen Touran,Volkswagen up,Volkswagen Sharan,Volkswagen Santana,Volkswagen Lavida
U3000 Volkswagen Control Module OBD Code: System: Subsystem: U3000 Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Control Module Location: Analysis: Possible Causes: Tech description: Volkswagen Vehicle:Volkswagen CC,Volkswagen Eos,Volkswagen Golf,Volkswagen GTI,Volkswagen
U3001 Volkswagen Control Module Improper Shutdown OBD Code: System: Subsystem: U3001 Volkswagen – (ASE) Network Communication Fuel & Air metering, Auxiliary emission controls Trouble Code Description: Control Module Improper Shutdown Location: Analysis: Possible Causes: Tech description: Volkswagen Vehicle:Volkswagen
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