Honda Cars 2007-2008

3.5L V6 VIN - Auto 6

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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: 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: P145C



Evaporative Emission (EVAP) System Purge Flow Malfunction

Possible Causes:



Troubleshoot appropriate DTCs
 

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: P15AB



Engine Mount Control Unit Power Source Circuit Low Voltage

Possible Causes:



Blown fuse
 
Poor connections or loose terminals at the engine mount control unit and the body ground
 
"Open" circuit between engine mount control unit and body ground
 
"Open" circuit between engine mount control unit and power source
 
Faulty engine mount control unit
 

Trouble Code: P15AE



Cylinder Pause Signal 1 Malfunction

Possible Causes:



Poor connections or loose terminals at the engine mount control unit and the PCM
 
"Open" or "Short" circuit between the engine mount control unit and PCM
 
Faulty engine mount control unit
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P15B0



Crankshaft Position (CKP) Sensor Signal Malfunction

Possible Causes:



Poor connections or loose terminals at the engine mount control unit and the PCM
 
"Open" or "Short" to ground between engine mount control unit and the PCM
 
Faulty engine mount control unit
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P15BD



Cylinder Pause Signal 2 Malfunction

Possible Causes:



Poor connections or loose terminals at the engine mount control unit and the PCM
 
"Open" or "Short" circuit between the engine mount control unit and PCM
 
Faulty engine mount control unit
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P15BE



Camshaft Position (CMP) Sensor Signal Malfunction

Possible Causes:



Poor connections or loose terminals at the engine mount control unit and the PCM
 
"Open" or "Short" to ground between the engine mount control unit and PCM
 
Faulty engine mount control unit
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P15BF



Camshaft Position (CMP) Sensor Signal Intermittent Interruption

Possible Causes:



Poor connections or loose terminals at the engine mount control unit and the PCM
 
"Open" or "Short" circuit between the engine mount control unit and PCM
 
Faulty engine mount control unit
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P15C0



Crankshaft Position (CKP) Sensor Signal Intermittent Interruption

Possible Causes:



Poor connections or loose terminals at the engine mount control unit and the PCM
 
"Open" or "Short" to ground between the engine mount control unit and PCM
 
Faulty engine mount control unit
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P1658



Electronic Throttle Control System (ETCS) Control Relay ON Malfunction

Possible Causes:



Poor connections or loose terminals at the under-hood fuse/relay box (ETCS control relay) and the PCM
 
"Short" in the wire between the PCM and the under-hood fuse/relay box (ETCS control relay)
 
"Short" to power in the wire between the PCM and the under-hood fuse/relay box (ETCS control relay)
 
Faulty relay control module (under-hood fuse/relay box)
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P1659



Electronic Throttle Control System (ETCS) Control Relay OFF Malfunction

Possible Causes:



Blown fuse
 
Poor connections or loose terminals at the under-hood fuse/relay box (ETCS control relay) and the PCM
 
"Open" or "Short" in the wire between the PCM and the under-hood fuse/relay box
 
Faulty right side engine compartment wire harness
 
Faulty relay control module (under-hood fuse/relay box)
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P1683



Throttle Valve Default Position Spring Performance Problem

Possible Causes:



Poor connections or loose terminals at the throttle body and the PCM
 
Faulty throttle body
 

Trouble Code: P1684



Throttle Valve Return Spring Performance Problem

Possible Causes:



Poor connections or loose terminals at the throttle body and the PCM
 
Faulty throttle body
 

Trouble Code: P16BB



Alternator B Terminal Circuit Low Voltage

Possible Causes:



Faulty battery
 
Poor connections or loose terminals at the alternator and the main under-hood fuse box
 
"Open" circuit between the alternator and the main under-hood fuse box
 
Faulty alternator
 

Trouble Code: P16BC



Alternator FR Terminal Circuit/IGP Circuit Low Voltage

Possible Causes:



Blown fuse
 
Poor connections or loose terminals at the alternator connector
 
Poor alternator ground
 



Faulty alternator
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P16C4



Engine Mount Actuator Control Power Circuit (Stuck Off)

Possible Causes:



Blown fuse
 
Poor connections or loose terminals at the engine mount control unit and the driver's under-dash fuse/relay box (active control engine mount (ACM) control relay)
 
"Open" or "Short" to ground between engine mount control unit and driver's under-dash fuse/relay box
 
Faulty (ACM) control relay in the driver's under-dash fuse/relay box
 
Faulty engine mount control unit
 

Trouble Code: P16C5



Engine Mount Actuator Control Power Circuit (Stuck ON)

Possible Causes:



"Short" to ground in the wire between engine mount control unit and driver's under-dash fuse/relay box
 
"Short" to power in the wire between engine mount control unit and driver's under-dash fuse/relay box
 
Faulty driver's under-dash fuse/relay box
 
Faulty engine mount control unit
 

Trouble Code: P16C6



Engine Mount Actuator High Voltage During Function Test

Possible Causes:



Check for poor connections or loose terminals at the engine mount control unit, the engine mount actuator, and body ground.
 

Trouble Code: P1743



Problem in Shift Control System; Shift Valve E Stuck OFF

Possible Causes:



Low transmission fluid
 
Dirty transmission fluid
 
If the strainer has metal debris or excessive clutch material, replace the transmission
 
Faulty shift valve E in the main valve body, replace the main valve body
 
Faulty transmission
 

Trouble Code: P1744



Problem in Shift Control System; Shift Valve E Stuck ON

Possible Causes:



Low or dirty transmission fluid
 



Faulty shift valve E in the main valve body, replace the main valve body
 
Faulty transmission
 

Trouble Code: P1745



Problem in Shift Control System; Servo Control Valve Stuck OFF or Servo Valve Stuck OFF

Possible Causes:



Low or dirty transmission fluid
 
If the strainer has metal debris or excessive clutch material, replace the transmission
 
Faulty servo control valve in the main valve body, servo valve in the regulator valve body, or replace the main valve body, regulator valve body
 
Faulty transmission
 

Trouble Code: P1780



Problem in Shift Control System (Transmission is in Default Mode)

Possible Causes:



Poor connections and loose terminals at the PCM
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2101



Electronic Throttle Control System (ETCS) Malfunction (Includes Hybrid Models)

Possible Causes:



Dirty throttle body
 
Poor connections or loose terminals at the throttle body and the PCM
 
"Open" circuit between the throttle body and the PCM
 
Faulty throttle body
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2108



Throttle Actuator Control Module Problem

Possible Causes:



Poor connections or loose terminals at the throttle body, the throttle actuator control module and the PCM
 
Faulty throttle actuator control module
 

Trouble Code: P2118



Throttle Actuator Current Range/Performance Problem (Includes Hybrid Models)

Possible Causes:



Poor connections or loose terminals at the throttle body and the PCM
 
"Short" circuit between the PCM (ETCSM-line) and (ETCSM+line)
 
Faulty throttle body
 
Faulty throttle actuator control module
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2122



APP Sensor A or 1 (TP Sensor D) Circuit Low Voltage (Includes Hybrid Models)

Possible Causes:



Poor connections or loose terminals at APP sensor A and the PCM
 
"Open" or "Short" circuit between the PCM and APP sensor A
 
Faulty APP sensor
 
Faulty accelerator pedal module
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2123



APP Sensor A or 1 (TP Sensor D) Circuit High Voltage (Includes Hybrid Models)

Possible Causes:



Poor connections or loose terminals at APP sensor A and the PCM
 
"Open" circuit between the PCM and APP sensor A
 
Faulty APP sensor
 
Faulty accelerator pedal module
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2127



APP Sensor B or 2 (Throttle Position (TP) Sensor E) Circuit Low Voltage (Includes Hybrid Models)

Possible Causes:



Poor connections or loose terminals at APP sensor B and the PCM
 
"Open" or "Short" circuit between the PCM and APP sensor B
 
Faulty accelerator pedal module
 
Faulty APP sensor
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2128



APP Sensor B or 2 (Throttle Position (TP) Sensor E) Circuit High Voltage (Includes Hybrid Models)

Possible Causes:



Poor connections or loose terminals APP sensor B and the PCM
 
"Open" circuit between the PCM and APP sensor B
 
Faulty accelerator pedal module
 
Faulty APP sensor
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2135



Throttle Position (TP) Sensor A/B or 1/2 Incorrect Voltage Correlation (Includes Hybrid Models)

Possible Causes:



Poor connections or loose terminals at the throttle body and the PCM
 
"Short" circuit between the PCM (TPSA line) and the (TPSB line)
 
Faulty throttle body
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2138



APP Sensor A/B or 1/2 (Throttle Position (TP) Sensor D/E) Incorrect Voltage Correlation (Includes Hybrid Models)

Possible Causes:



Poor connections or loose terminals at the APP sensor and the PCM
 
"Short" circuit between PCM (APSA line) and (APSB line)
 
Faulty accelerator pedal module
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2176



Throttle Actuator Control System Idle Position Not Learned (Includes Hybrid Models)

Possible Causes:



Dirty throttle body
 
Poor connections or loose terminals at the throttle body and the PCM
 
"Open" circuit between the throttle body and the PCM
 
Faulty throttle body
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

 
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