Honda Cars 2007-2008

3.0L V6 VIN - Auto 9

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Trouble Code: P2252



Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VS Circuit Low Voltage

Possible Causes:



Poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM
 
"Short" circuit between the PCM and the A/F sensor (Sensor 1)
 
Faulty A/F sensor (Sensor 1)
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2254



Front A/F Sensor (Bank 2, Sensor 1) VS Circuit High Voltage

Possible Causes:



Poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM
 
"Open" circuit between the PCM and the A/F sensor (Sensor 1)
 
Faulty A/F sensor (Sensor 1)
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2255



Front A/F Sensor (Bank 2, Sensor 1) VS Circuit Low Voltage

Possible Causes:



Poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM
 
"Short" circuit between the PCM and the A/F sensor (Sensor 1)
 
Faulty A/F sensor (Sensor 1)
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2270



Rear Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 1, Sensor 2) Circuit Signal Stuck Lean

Possible Causes:



Poor connections or loose terminals at the secondary HO2S (Sensor 2) and the PCM
 
Faulty secondary HO2S (Sensor 2)
 

Trouble Code: P2271



Rear Secondary HO2S (Bank 1, Sensor 2) Circuit Signal Stuck Rich

Possible Causes:



Poor connections or loose terminals at the secondary HO2S (Sensor 2) and the PCM
 
Faulty secondary HO2S (Sensor 2)
 

Trouble Code: P2272



Front Secondary HO2S (Bank 2, Sensor 2) Circuit Signal Stuck Lean

Possible Causes:



Poor connections or loose terminals at the secondary HO2S (Sensor 2) and the PCM
 
Faulty secondary HO2S (Sensor 2)
 

Trouble Code: P2279



Intake Air System Leak

Possible Causes:



Vacuum leaks at the PCV valve, the PCV hose, the purge (PCS) line, the throttle body, the intake manifold, and the brake booster hose
 
Incorrect camshaft timing
 

Trouble Code: P2413



Exhaust Gas Recirculation (EGR) System Malfunction

Possible Causes:



Clogged intake manifold EGR port or EGR valve
 
Poor connections or loose terminals at the EGR valve and the PCM
 
"Open" in the wire between the EGR valve and ground
 
"Open" or "Short" circuit between the PCM and the EGR valve
 
Faulty EGR valve
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2422



EVAP Canister Vent Shut Valve Close Malfunction

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: P2552



Throttle Actuator Control Module Relay Malfunction

Possible Causes:



Poor connections or loose terminals at the throttle actuator control module relay, the throttle actuator control module, and the PCM
 
Faulty throttle actuator control module relay
 
"Short" circuit between the throttle actuator control module relay and the PCM
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2610



ECM/PCM Ignition Off Internal Timer Malfunction

Possible Causes:



ECM/PCM needs to be updated with the latest software
 
Faulty ECM/PCM
 

Trouble Code: P2627



Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) LABEL Circuit Low Voltage

Possible Causes:



Poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM
 
"Short" between the A/F sensor relay and each connector
 
Faulty A/F sensor (Sensor 1)
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2628



Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) LABEL Circuit High Voltage

Possible Causes:



Poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM
 
"Open" between the A/F sensor relay and each connector
 
"Open" ground circuit
 
Faulty A/F sensor (Sensor 1)
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2630



Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) LABEL Circuit Low Voltage

Possible Causes:



Poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM
 
"Short" between the A/F sensor relay and each connector
 
Faulty A/F sensor (Sensor 1)
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2631



Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) LABEL Circuit High Voltage

Possible Causes:



Poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM
 
"Open" between the A/F sensor relay and each connector
 
"Open" ground circuit
 
Faulty A/F sensor (Sensor 1)
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2646



Rocker Arm Oil Pressure Switch (VTEC Oil Pressure Switch) Circuit Low Voltage

Possible Causes:



Low engine oil or faulty oil pressure
 
Poor connections or loose terminals at the rocker arm oil pressure switch, the rocker arm oil control solenoid, and the PCM
 
"Short" circuit between the PCM and the rocker arm oil pressure switch
 
Faulty rocker arm oil pressure switch
 
Faulty rocker arm oil control solenoid
 
Faulty rocker arm
 

Trouble Code: P2647



Rocker Arm Oil Pressure Switch (VTEC Oil Pressure Switch) Circuit High Voltage

Possible Causes:



Low oil level
 
Low oil pressure
 
"Open" in the wire between the rocker arm oil pressure switch and ground
 
Poor connections or loose terminals at the rocker arm oil pressure switch, the rocker arm oil control solenoid, and the PCM
 
"Open" circuit between the PCM and the rocker arm oil pressure switch
 
Faulty rocker arm oil pressure switch
 
Faulty rocker arm oil control solenoid assembly
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2648



Rocker Arm Oil Control Solenoid (VTEC Solenoid Valve) Circuit Low Voltage

Possible Causes:



Poor connections or loose terminals at the rocker arm oil control solenoid and the PCM
 
"Short" circuit between the PCM and the rocker arm oil control solenoid
 
Faulty rocker arm oil control solenoid
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2649



Rocker Arm Oil Control Solenoid (VTEC Solenoid Valve) Circuit High Voltage

Possible Causes:



Poor connections or loose terminals at the rocker arm oil control solenoid and the PCM
 
"Open" circuit between the PCM and the rocker arm oil control solenoid
 
Faulty rocker arm oil control solenoid
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2653



Rocker Arm Oil Control Solenoid B (Bank 1) Circuit Low Voltage

Possible Causes:



Poor connections or loose terminals at rocker arm oil control solenoid B (Bank 1) and the PCM
 
"Short" circuit between the PCM and rocker arm oil control solenoid B (Bank 1)
 
Faulty rear rocker arm oil control valve
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2770



Open in Torque Converter Clutch Solenoid Valve Curcuit

Possible Causes:



Poor connections or loose terminals the PCM
 
"Open" circuit between the PCM and the torque converter clutch solenoid
 
"Open" circuit in the torque converter clutch solenoid harness
 
Faulty torque converter clutch solenoid
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2A00



Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Circuit Range/Performance Problem

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: P2A03



Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Circuit Range/Performance Problem

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: SRS 11-11



Short to Another Airbag Inflator in the Driver's Airbag First Inflator (4-door)

Possible Causes:



Short to another wire in the dashboard wire harness; replace the dashboard wire harness, then clear the DTC
 
SRS unit or poor connection at SRS unit connector
 
Faulty driver's airbag first inflator
 
Dashboard wire harness
 
Wire in the cable reel
 

Trouble Code: U0029



F-CAN A Malfunction (BUS-OFF (PCM))

Possible Causes:



Check battery and charging system condition
 
Loose or poor connections, or worn/shorted wires
 
"Short" in the F-CAN wires
 
Faulty gauge control module
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: U0073



F-CAN Malfunction (BUS-OFF)

Possible Causes:



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

Trouble Code: U0100



Gauge Control Module Lost Communication With ECM/PCM

Possible Causes:



Faulty battery or charging system
 
Perform the gauge control module input test
 
Loose or poor connections at the gauge control module and the ECM/PCM
 
Check for faulty inputs
 
Gauge control module is faulty
 
Faulty ECM/PCM
 

Trouble Code: U0100/55



Motor Control Module (MCM) Lost Communication with PCM (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the PCM and the MCM
 
Perform DLC Circuit Troubleshooting
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: U0107



Lost Communication With Throttle Actuator Control Module

Possible Causes:



Poor connections or loose terminals at the throttle body, the throttle actuator control module relay, the throttle actuator control module, and the PCM
 
"Open" in the wire between the PCM and ground
 
"Open" or "Short" circuit between the throttle actuator control module and the PCM
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: U0122



F-CAN A Malfunction (Powertrain Control Module (PCM)-VSA Modulator-Control Unit) (PGM-FI System)

Possible Causes:



Poor connections or loose terminals at the VSA modulator-control unit and the PCM
 
"Open" circuit between the PCM and the VSA modulator-control unit
 
VSA modulator-control unit needs to be updated with the latest software
 
Faulty VSA modulator-control unit
 

Trouble Code: U0155



Lost Communication with Gauge Control Module

Possible Causes:



Poor connections and loose terminals at the gauge control module and the PCM
 
"Open" circuit between the PCM and the gauge control module
 
Faulty Gauge Control Module
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: U0155



Climate Control Unit Lost Communication with Gauge Control Module

Possible Causes:



Loose wires or poor connections on the B-CAN lines between the gauge control module and the climate control unit
 
Perform the gauge control module input test
 
"Open" in the wire(s) between the climate control unit and the gauge control module
 
Faulty climate control unit
 

Trouble Code: U0155



Passenger's MICU Lost Communication With Gauge Control Module

Possible Causes:



Loose or poor connections at the gauge control module and the related units
 
Perform the gauge control module input test, and do all power, ground, and communication input tests. If the tests prove OK, replace the gauge control module
 

Trouble Code: U0164/80



IMA-CAN Malfunction (PCM-A/C compressor driver) (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the MCM, the A/C compressor driver, and the PCM
 
Blown fuse
 
"Open" or "Short" circuit between the MCM and the A/C compressor driver
 
"Open" in the wire between the A/C compressor driver and ground
 
Faulty A/C compressor driver
 

Trouble Code: U1102



F-CAN Malfunction (ECM/PCM Gauge Control Module)

Possible Causes:



Poor connections and loose terminals at the gauge control module and the ECM/PCM
 
"Open" circuit between the ECM/PCM and the gauge control module
 
ECM/PCM may need to be updated with the latest software
 
Faulty ECM/PCM
 

Trouble Code: U1202/64



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: U1203/75



Motor Control Module (MCM) Internal Circuit Malfunction

Possible Causes:



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

Trouble Code: U1220/34



DC-DC Converter Lost Communication with Motor Control Module (MCM) (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the DC-DC converter and the MCM
 
"Open" or "Short" circuit between the DC-DC converter and the MCM
 
Faulty DC-DC converter
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: U1221/35



Motor Control Module (MCM) Lost Communication with DC-DC Converter (HYBRID MODELS)

Possible Causes:



Poor connections or loose terminals at the DC-DC converter and the MCM
 
Faulty +B connector on the DC-DC converter
 
Blown fuse
 
"Open" or "Short" circuit between the DC-DC converter and the MCM
 
Faulty DC-DC converter
 
MCM may need to be updated with the latest software
 
Faulty MCM
 

Trouble Code: U1283



Door Multiplex Control Unit Lost Communication With Passenger's MICU

Possible Causes:



Perform the passenger's MICU input test, and do all power, ground and communication input tests. If the tests prove OK, replace the passenger's under-dash fuse/relay box
 
Loose or poor connections at passenger's under-dash fuse/relay box and the related units
 

 
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