This is detected when CAN data from engine control module (ECM) is abnormal.
Note. Perform the diagnosis for LAN system. < Refer to PROCEDURE , Basic Diagnostic Procedure. >
Home/Subaru/XV/Subaru XV GP (2011-2016)/Repair manual/Automatic HVAC System/DTC U0401 INVALID DATA RECEIVED FROM ECM/PCM "A"
Contents
Wiring diagrams Section: Automatic HVAC System- HVAC System (Heater, Ventilator and A/c) - Mechanism & Function: Specifications
- HVAC System (Heater, Ventilator and A/c) - Mechanism & Function: Overview
- HVAC System (Heater, Ventilator and A/c) - Mechanism & Function: Other
- HVAC System (Auto AC) (Diagnostics) (Except Wrx): Overview
- HVAC System (Auto AC) (Diagnostics) (Except Wrx): Diagnosis
- HVAC System (Auto AC) (Diagnostics) (Except Wrx): Wiring
- HVAC System (Auto AC) (Diagnostics) (Except Wrx): Component Locations
- HVAC System (Auto AC) (Diagnostics) (Except Wrx): Other
- DTC U0073 CONTROL MODULE COMMUNICATION BUS "A" OFF
- DTC U0100 LOST COMMUNICATION WITH ECM/PCM "A"
- DTC U0101 LOST COMMUNICATION WITH TCM
- DTC U0122 LOST COMMUNICATION WITH VEHICLE DYNAMICS CONTROL MODULE
- DTC U0140 LOST COMMUNICATION WITH BODY CONTROL MODULE
- DTC U0155 LOST COMMUNICATION WITH INSTRUMENT PANEL CLUSTER (IPC) CONTROL MODULE
- DTC U0401 INVALID DATA RECEIVED FROM ECM/PCM "A"
- DTC U0402 INVALID DATA RECEIVED FROM TCM
- DTC U0416 INVALID DATA RECEIVED FROM VEHICLE DYNAMICS CONTROL MODULE
- DTC U0422 INVALID DATA RECEIVED FROM BODY CONTROL MODULE
- DTC U0423 INVALID DATA RECEIVED FROM INSTRUMENT PANEL CLUSTER CONTROL MODULE
- Abbreviations
- Air Bag System (Except Wrx)
- Airbag
- Anti-Lock/traction Control
- Automatic HVAC System
- Automatic Trans
- Automatic Transaxle (Cvt) (Except Wrx): Diagnosis
- Auxiliary Emission Control Systems
- Axle Shafts
- Basic Trouble Shooting
- Brakes
- Charging System
- Check Lists
- Clutches Manual & Hydraulic
- Communication Devices
- Cooling Fan
- Cooling System (Mechanical)
- Cruise Control Systems
- Diagnostic Trouble Code (DTC) Detecting Criteria (Except Wrx): Diagnosis
- Differentials & Drive Axles
- Door Locks & Anti-Theft Systems
- Drive Cycles
- Driveline/axles
- Driveshaft & Universal Joints
- DTC Index
- Emission Applications
- Engine
- Engine Control Systems
- Engine Mechanical (Except Wrx)
- Engine Performance
- Entertainment Systems
- Exhaust
- Exterior Body Panels
- Exterior Lights
- Exterior Trim & Interior Trim (Except Wrx)
- Exterior/interior Trim
- Fuel System
- Gauges & Instrument Panels
- General Servicing - All Makes
- Hoist/jack
- Identification
- Ignition System
- Lubrication System
- Manual & Power Steering
- Manual HVAC System
- Manual Trans
- Manual Transaxle & Differential (5MT) (Except Wrx)
- Mechanical
- Mechanical - Hydraulic
- Metric Conversions
- Mode 6
- Parking Brake System
- Reset Procedures
- Restraints Control Systems
- Seats
- Steering
- Sun Roof/t-Top/convertible Top
- Suspension Front
- Suspension Rear
- Testing & Diagnostics
- Traction Control Disable
- Transfer Case
- Transmission
- Wheel & Tire System
- Wheel Alignment
- Windows
- Wiper/washer Systems