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    Honda Cars 2007-2008

    2.4L L4 VIN - Std 3

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    Trouble Code: B1238



    A Problem in the Passenger's Air Mix Control Linkage, Door, or Motor

    Possible Causes:



    Perform the climate control self-diagnostic with the HDS or the climate control unit
     
    Faulty passenger's air mix control motor and/or air mix control linkage and the door
     
    Faulty climate control unit
     

    Trouble Code: B1239



    Open or Short in the Drivers Mode Control Motor Circuit

    Possible Causes:



    Loose wires or poor connections on the Drivers Mode Control Motor circuit
     
    Perform the HVAC self-diagnostic function with the HDS
     
    "Short or "Open" in the wires between the Climate Control Unit and the Drivers Mode Control Motor
     
    Faulty Drivers Mode Control Motor
     
    Faulty Climate Control Unit
     

    Trouble Code: B1241



    Problem in the Blower Motor Circuit

    Possible Causes:



    Loose wires or poor connections on the front blower motor circuit
     
    Blown fuse in the main under-hood fuse box
     
    Blown fuse in the under-dash fuse/relay box
     
    "Open" or "Short" in the wire(s) between the Climate Control Unit and the Power Transistor
     
    "Short" in the wire(s) between the Climate Control Unit and the Blower Motor
     
    Faulty Power Transistor
     
    Faulty Blower Motor
     
    Faulty Climate Control Unit
     

    Trouble Code: B1250



    Communication Bus Line Error (BUS OFF)

    Possible Causes:



    Loose or poor connections at combination switch control unit connector and at under-dash fuse/relay box connector
     
    Combination switch control unit
     

    Trouble Code: B1251



    Combination Switch Control unit Internal Error

    Possible Causes:



    Loose or poor connections. If the connections are good, check the battery condition and the charging system
     
    Faulty combination switch control unit; replace the wiper/washer switch
     

    Trouble Code: B1255



    Combination Switch Control Unit Lost Communication with MICU (MICU Message)

    Possible Causes:



    Loose or poor connections between the Combination Switch Control Unit and the MICU
     
    Blown fuse in the main under-hood fuse box
     
    Blown fuse in the under-dash fuse/relay box
     
    "Open" or "Short" to ground at the Combination Control Unit
     
    "Open" or "Short" to ground at the MICU
     
    Faulty MICU
     
    Faulty Combination Control Unit
     

    Trouble Code: B1275



    Headlight OFF Position Circuit Malfunction

    Possible Causes:



    "Open" or "Short" between driver's under-dash fuse/relay box and the combination light switch
     
    Faulty driver's MICU; replace the driver's under-dash fuse/relay box
     
    Faulty combination light switch
     

    Trouble Code: B1276



    Combination Light Switch Parking (SMALL) Position Circuit Malfunction

    Possible Causes:



    Loose or poor connections
     
    "Open" or "short" in the combination light switch terminals
     
    Faulty combination switch control unit, replace the wiper/washer switch
     
    Faulty Combination Light Switch
     

    Trouble Code: B1277



    Headlight AUTO Position Circuit Malfunction

    Possible Causes:



    "Open" or "Short" between driver's under-dash fuse/relay box and the combination light switch
     
    Faulty driver's MICU; replace the driver's under-dash fuse/relay box
     
    Faulty combination light switch
     

    Trouble Code: B1278



    Headlight Switch ON Position Circuit Malfunction

    Possible Causes:



    Loose or poor connections
     
    "Open" or "short" in the combination light switch terminals
     
    Faulty combination switch control unit, replace the wiper/washer switch
     
    Faulty Combination Light Switch
     

    Trouble Code: B1279



    Headlight Switch DIMMER Position Circuit Malfunction

    Possible Causes:



    Loose or poor connections
     
    "Open" or "Short" in the combination light switch terminals
     
    Faulty Combination Switch Control Unit, replace the wiper/washer switch.
     
    Faulty Combination Light Switch
     

    Trouble Code: B1280



    Turn Signal Switch Circuit Malfunction

    Possible Causes:



    Loose or poor connections at the turn signal switch
     
    "Open" or "short" in the turn signal switch
     
    Faulty combination switch control unit, replace the wiper/washer switch
     
    Faulty Combination Light Switch
     

    Trouble Code: B1281



    Windshield Wiper Switch MIST Position Circuit Malfunction

    Possible Causes:



    Loose or poor connections
     
    Faulty Wiper/Washer switch
     

    Trouble Code: B1282



    Windshield Wiper Switch INT (AUTO) Position Circuit Malfunction

    Possible Causes:



    Loose or poor connections
     
    Faulty Wiper/Washer switch
     

    Trouble Code: B1283



    Windshield Wiper Switch LOW Position Circuit Malfunction

    Possible Causes:



    Loose or poor connections
     
    Faulty Wiper/Washer switch
     

    Trouble Code: B1284



    Windshield Wiper Switch HIGH Position Circuit Malfunction

    Possible Causes:



    Loose or poor connections
     
    Faulty Wiper/Washer switch
     

    Trouble Code: B1575



    Automatic Lighting Sensor Circuit Malfunction

    Possible Causes:



    Loose or poor connections between the Automatic Lighting Sensor and the MICU
     
    "Open" or "Short" Automatic Lighting Sensor and the MICU
     
    FaultyAutomatic Lighting Sensor
     
    Faulty under-dash fuse/relay box (MICU)
     

    Trouble Code: B1775



    Microphone Input/Output Short to Power/Open

    Possible Causes:



    Faulty harness between the HandsFreeLink control unit and the roof console
     
    "Short" to power/open circuit
     
    Faulty HandsFreeLink control unit
     

    Trouble Code: B1776



    Microphone Input/Output Short to Ground/Open

    Possible Causes:



    "Short" to ground/open circuit
     
    Faulty harness between the HandsFreeLinks control unit and the roof console
     
    Faulty harness between the HandsFreeLink control unit and the Navigation Unit
     
    Faulty HFL control unit
     
    HandsFreeLink control unit
     

    Trouble Code: B1779



    HFL Switch (HFL TALK/HFL BACK Buttons) Circuit Open/Short

    Possible Causes:



    Faulty Cable Reel Subharness
     
    "Short" to power
     
    "Open" circuit between the switch, cable reel, and HandsFreeLink control unit
     
    "Open" in the wire between the switch, cable reel, and the audio unit
     
    Faulty HandsFreeLink control unit
     

    Trouble Code: B1780



    HFL Switch (HFL TALK/HFL BACK Buttons) Circuit Short

    Possible Causes:



    "Short" circuit in the HFL Switch
     
    Faulty Cable Reel Subharness
     
    Faulty HandsFreeLink control unit
     

    Trouble Code: B1792



    HandsFreeLink Control Unit Internal Error

    Possible Causes:



    Faulty HandsFreeLink control unit
     

    Trouble Code: B2983



    Problem in the Recirculation Control Linkage, Door, or Motor Circuit

    Possible Causes:



    Loose wires or poor connections on the recirculation control motor circuit
     
    Faulty Recirculation control motor, control linkage or door
     
    "Open" or "Short" in the wire(s) between the climate control unit and the recirculation control motor
     
    Faulty Climate Control Unit
     

    Trouble Code: B2986



    Open in the Recirculation Control Motor Circuit

    Possible Causes:



    Loose wires or poor connections on the recirculation control motor circuit
     
    "Open" circuit(s) between the climate control unit and the recirculation control motor
     
    Faulty recirculation control motor
     
    Faulty climate control unit
     

    Trouble Code: HVAC 1



    An Open in the Air Mix Control Motor Circuit

    Possible Causes:



    Check for loose wires or poor connections at the HVAC control unit
     
    Repair an open in the wire(s) between the HVAC control unit and the air mix control motor
     

    Trouble Code: HVAC 10



    An Open or Short in the Mode Control Motor Circuit

    Possible Causes:



    Check for loose wires or poor connections on the mode control motorcircuit
     
    Repair a short to power in the wire(s) between the HVAC control unit and the mode control motor
     
    HVAC control unit
     

    Trouble Code: HVAC 11



    A Problem in the Mode Control Linkage, Doors, or Motor Circuit

    Possible Causes:



    Repair a short to body ground in the wire(s) between the HVAC control unit and the mode control motor
     
    HVAC control unit
     

    Trouble Code: HVAC 12



    A Problem in the Blower Motor Circuit

    Possible Causes:



    Check for loose wires or poor connections on the blower motor circuit.
     
    Check for an open in the wire between the power transistor and body ground.
     
    Short to body ground in the wire(s) between the HVAC control unit and the power transistor
     
    Power transistor
     
    Blower motor relay
     

    Trouble Code: HVAC 13



    HVAC Control Unit Internal Error

    Possible Causes:



    Poor connections at the HVAC control unit
     
    HVAC control unit
     

    Trouble Code: HVAC 14



    An Open in the Evaporator Temperature Sensor Circuit

    Possible Causes:



    Check for loose wires or poor connections on the evaporator temperature sensor circuit
     
    Loose wires or poor connections at the HVAC control unit
     
    HVAC control unit
     
    Evaporator temperature sensor
     

    Trouble Code: HVAC 15



    A Short in the Evaporator Temperature Sensor Circuit

    Possible Causes:



    Check for damaged wires or connections in the evaporator temperature sensor circuit
     
    Repair a short to body ground in the wire between the HVAC control unit and the evaporator temperature sensor
     
    Evaporator temperature sensor
     
    HVAC control unit
     

    Trouble Code: HVAC 2



    A Short in the Air Mix Control Motor Circuit

    Possible Causes:



    Repair a short to power in the wire(s) between the HVAC control unit and the air mix control motor.
     
    HVAC control unit
     

    Trouble Code: HVAC 3



    A Problem in the Air Mix Control Linkage, Door, or Motor Circuit

    Possible Causes:



    Repair a short to body ground in the wire(s) between the HVAC control unit and the air mix control motor
     
    Check for loose wires or poor connections on the air mix control motor circuit
     
    HVAC control unit
     

    Trouble Code: HVAC 4



    An Open in the Mode Control Motor Circuit

    Possible Causes:



    Check for loose wires or poor connections on the mode control motorcircuit.
     
    Check for loose wires or poor connections at the HVAC control unit
     
    Repair an open in the wire(s) between the HVAC control unit and the mode control motor
     
    HVAC control unit
     

    Trouble Code: HVAC 5



    A Short in the Mode Control Motor Circuit

    Possible Causes:



    Intermittent failure. Check for loose wires or poor connections on the mode control motor circuit
     
    Repair a short to body ground in the wire(s) between the HVAC control unit and the mode control motor
     
    HVAC control unit
     

    Trouble Code: HVAC 6



    A Problem in the Mode Control Linkage, Door, or Motor Circuit

    Possible Causes:



    Intermittent failure. Check for loose wires or poor connections on the mode control motorcircuit
     
    Repair a short to body ground in the wire(s) between the HVAC control unit and the mode control motor
     
    HVAC control unit
     

    Trouble Code: HVAC 7



    An Open in the Recirculation Control Motor Circuit

    Possible Causes:



    Check for loose wires or poor connections at the HVAC control unit
     
    Repair an open in the wire(s) between the HVAC control unit and the recirculation control motor
     
    HVAC control unit
     

    Trouble Code: HVAC 8



    A Short in the Recirculation Control Motor Circuit

    Possible Causes:



    Repair a short to power in the wire(s) between the HVAC control unit and the recirculation control motor
     
    Check for loose wires or poor connections
     
    Repair a short to power before replacing the HVAC control unit
     
    HVAC control unit
     

    Trouble Code: HVAC 9



    A Problem in the Recirculation Control Linkage, Door, or Motor Circuit

    Possible Causes:



    Repair a short to body ground in the wire(s) between the HVAC control unit and the recirculation control motor
     
    HVAC control unit
     

    Trouble Code: P0010



    Variable Valve Timing Control (VTC) Oil Control Solenoid Valve Malfunction

    Possible Causes:



    Poor connections or loose terminals at the VTC oil control solenoid valve and the ECM/PCM
     
    "Open" circuit between the VTC oil control solenoid valve and ground
     
    "Open" or "Short" circuit between the ECM/PCM and the VTC oil control solenoid valve
     
    Faulty VTC oil control solenoid valve
     

     
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