Honda Cars 2007-2008

3.0L V6 VIN - Auto 7

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Trouble Code: P0A9D/49



Battery Module Temperature Sensor 1 Circuit Low Voltage

Possible Causes:



Poor connections or loose terminals at the battery module and the MCM
 
"Short" circuit between the battery module and the MCM (B1)
 
Faulty battery module
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P0A9E/50



Battery Module Temperature Sensor 1 Circuit High Voltage (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the battery module and the MCM
 
"Open" circuit between the battery module and the MCM (A31)
 
Faulty battery module
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P0AA6/59



High Voltage Short Circuit

Possible Causes:



Poor high voltage cable (orange cable) connection and busbar connection on the junction board
 
Faulty high voltage contactor
 
Faulty bypass contactor
 
Faulty DC-DC converter
 
Faulty battery module,
 
Faulty Y capacitor
 
Faulty MPI module
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P0AA7/76



Motor Control Module (MCM) Internal Circuit Malfunction (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the MCM
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P0AB7



Rear Engine Mount Actuator Control Circuit Low Current

Possible Causes:



Poor connections or loose terminals at the engine mount control unit and the engine mount actuator
 
"Open" or "Short" circuit between the engine mount control unit and the engine mount actuator
 
Faulty rear engine mount
 
Faulty engine mount control unit
 

Trouble Code: P0AC7/51



Battery Module Temperature Sensor 2 Circuit Low Voltage

Possible Causes:



Poor connections or loose terminals at the battery module and the MCM
 
"Short" circuit between the battery module and the MCM
 
Faulty battery module
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P0AC8/52



Battery Module Temperature Sensor 2 Circuit High Voltage (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the battery module and the MCM
 
"Open" circuit between the battery module and the MCM
 
Faulty battery module
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P0ACC/53



Battery Module Temperature Sensor 3 Circuit Low Voltage (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the battery module and the MCM
 
"Short" circuit between the battery module and the MCM
 
Faulty battery module
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P0ACD/54



Battery Module Temperature Sensor 3 Circuit High Voltage (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the battery module and the MCM
 
"Open" circuit between the battery module and the MCM
 
Faulty battery module
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P1077



Intake Manifold Runner Control (IMRC) Valve Stuck Open: Short Runner Position

Possible Causes:



Poor connections or loose terminals at the IMT (IMRC) actuator and the PCM
 
"Open" or "Short" between the PCM and the IMT (IMRC) actuator
 
IMT (IMRC) actuator
 
Stuck valve, replace the intake manifold if necessary
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P1078



Intake Manifold Runner Control (IMRC) Valve Stuck Closed: Long Runner Position

Possible Causes:



Poor connections or loose terminals at the IMT (IMRC) actuator and the PCM
 
"Open" or "Short" circuit between the PCM and the IMT (IMRC) actuator
 
Faulty IMT (IMRC) actuator
 
Stuck valve, replace the intake manifold if necessary
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P1109



Barometric Pressure (BARO) Sensor Circuit Out of Range High

Possible Causes:



PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P1116



Engine Coolant Temperature (ECT) Sensor 1 Circuit Range/Performance Problem

Possible Causes:



Poor connections or loose terminals at ECT sensor 1 and ECT sensor 2
 
Faulty ECT sensor 1
 
Faulty ECT sensor 2
 

Trouble Code: P1128



Manifold Absolute Pressure (MAP) Sensor Signal Lower Than Expected

Possible Causes:



Dirty air cleaner element
 
Poor connections or loose terminals at the MAP sensor and the PCM
 
Faulty MAP sensor
 

Trouble Code: P1129



MAP Sensor Signal Higher Than Expected

Possible Causes:



Vacuum leaks
 
Poor connections or loose terminals at the MAP sensor and the PCM
 
Faulty MAP sensor
 

Trouble Code: P1172



Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Circuit Out of Range High

Possible Causes:



Poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM
 
Faulty A/F sensor (Sensor 1)
 

Trouble Code: P1174



Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Circuit Out of Range High

Possible Causes:



Poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM
 
Faulty A/F sensor (Sensor 1)
 

Trouble Code: P1297



Electrical Load Detector (ELD) Circuit Low Voltage

Possible Causes:



Poor connections or loose terminals at the ELD and the PCM
 
"Short" circuit between the PCM and the ELD
 
Faulty left side engine compartment wire harness
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P1298



Electrical Load Detector (ELD) Circuit High Voltage

Possible Causes:



Blown fuse
 
Poor connections or loose terminals at the ELD and the PCM
 
"Open" circuit between the fuse in the under-dash fuse/relay box and the ELD
 
"Open" in the wire between the ELD and ground
 
Faulty left side engine compartment wire harness
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P1432/73



Battery Cell Overheating (HYBRID MODELS)

Possible Causes:



Faulty battery module
 

Trouble Code: P1434/45



Voltage Converter Module High Voltage (HYBRID MODELS)

Possible Causes:



DTC P1434 can be stored when the battery module needs protection from very low temperature.
 

Trouble Code: P1435/58



Charge/Discharge Balance Malfunction (HYBRID MODELS)

Possible Causes:



Low idle speed
 
Faulty 12 V battery or charging system
 

Trouble Code: P1437/41



Motor Power Inverter (MPI) Module Short Circuit (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the MPI module and the MCM
 
"Open" or "Short" circuit between the No. 53 +B IMA (10 A) fuse in auxiliary fuse holder B, MCM relay 2 and the MPI module
 
Faulty MPI module
 

Trouble Code: P1440/57



Motor Power Inverter (MPI) Module Output Circuit Malfunction (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the MPI module, the U/V/W phase motor current sensors, and the MCM
 
Poor motor power cable connection at the motor stator
 
"Open" or "Short" circuit between the MPI module and the MCM
 
Faulty MPI module
 
Faulty motor power cable
 
Faulty motor stator
 
Faulty motor rotor
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P1446/74



Battery Module Individual Voltage Input Deviation (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the battery module and the MCM
 
Faulty battery module
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P1448/63



Intelligent Power Unit (IPU) Module Fan Problem (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the IPU module fan and the MCM
 
"Open" or "Short" circuit between the IPU module fan and the MCM
 
"Open" in the wire between the IPU module fan and ground
 
Faulty IPU module fan
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P1454



Fuel Tank Pressure (FTP) Sensor Circuit Range/Performance Problem

Possible Causes:



Poor connections or loose terminals at the FTP sensor, the EVAP canister vent shut valve, and the PCM
 
Blockage in the EVAP canister, canister filter, vent hoses, and drain joint,
 
Blockage in the FTP sensor air tube or vent
 
Faulty FTP sensor
 
Faulty EVAP canister vent shut valve
 

Trouble Code: P1549



Charging System High Voltage

Possible Causes:



Poor connections or loose terminals at the alternator and the main under-hood fuse box
 
Faulty alternator
 

Trouble Code: P1569/70



Battery Cell Temperature Signal Circuit Malfunction (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the battery module and the MCM
 
"Open" or "Short" between the battery module and the MCM
 
Faulty battery module
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P1570/66



Battery Module Individual Voltage Problem (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the battery module and the MCM
 
Faulty battery module
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P1574/68



Battery Module Temperature Signal Circuit Malfunction (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the battery module and the MCM
 
Check the IPU module air duct and the IPU module fan for disconnections, damage, or obstructions
 
Faulty battery module
 

Trouble Code: P1575/12



Motor Power Inverter (MPI) Module Voltage Malfunction (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the MPI module, the high voltage contactor, and the MCM
 
High voltage cable (orange cable) connection and busbar connection on the
 



Faulty high voltage contactor
 
"Open" in the wire between the high voltage contactor and ground
 
"Open" or "Short" circuit between the high voltage contactor and the MCM
 
Faulty battery module
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P1580/65



Battery Current Sensor Circuit Malfunction (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the battery current sensor and the MCM
 
"Open" or "Short" circuit between the battery current sensor and the MCM
 
Faulty battery current sensor
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P1585/30



Motor Current Sensor Circuit Malfunction (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the U/V/W phase motor current sensors and the MCM
 
Faulty U/V/W phase motor current sensors
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P1586/23



Battery Current Sensor Signal Circuit Problem (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the battery current sensor and the MCM
 
"Open" or "Short" circuit between the MCM and the battery current sensor
 
Faulty battery current sensor
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P15A4/81



A/C Compressor Driver Relay Stays Activated (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the A/C compressor driver
 
Check continuity between A/C compressor power cable terminals A and B, B and C, and C and A individually.
 
Faulty A/C compressor driver
 
Faulty motor power cable
 
Faulty A/C compressor
 

Trouble Code: P15A5/85



Motor Current Sensor Circuit Malfunction (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the motor power cable, the U/V/W phase motor current sensors, and the MCM
 
Perform the motor rotor position calibration
 
Faulty U/V/W phase motor current sensor
 
Faulty MPI module
 
Faulty motor power cable
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P15A6/86



U Phase Motor Current Sensor Circuit Malfunction (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the U phase motor current sensor and the MCM
 
Faulty U phase motor current sensor
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P15A7/87



V Phase Motor Current Sensor Circuit Malfunction (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the V phase motor current sensor and the MCM
 
Faulty V phase motor current sensor
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: P15A8/88



W Phase Motor Current Sensor Circuit Malfunction (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the W phase motor current sensor and the MCM
 
Faulty W phase motor current sensor
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

 
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