Honda Cars 2007-2008

2.4L L4 VIN - Auto 3

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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
 

Trouble Code: P0011



Variable Valve Timing Control (VTC) System Malfunction

Possible Causes:



Engine oil level low, If the level is OK, check the engine oil pressure
 
Poor connections or loose terminals at the VTC oil control solenoid valve and the ECM/PCM
 
Faulty VTC oil control solenoid valve or clogged VTC strainer
 
Faulty VTC actuator
 
Perform the ECM/PCM idle learn procedure and the CKP pattern clear/CKP pattern learn procedure
 

 
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