Pilot 2006-2008

3.5L V6 VIN - Auto 6

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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
 

Trouble Code: P2183



Engine Coolant Temperature (ECT) Sensor 2 Circuit Range/Performance Problem (Includes Hybrid Models)

Possible Causes:



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

Trouble Code: P2184



Engine Coolant Temperature (ECT) Sensor 2 Circuit Low Voltage (Includes Hybrid Models)

Possible Causes:



Poor connections or loose terminals at ECT sensor 2 and the PCM
 
"Short" in the wire between ECT sensor 2 and the PCM
 
Faulty ECT sensor 2
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2185



Engine Coolant Temperature (ECT) Sensor 2 Circuit High Voltage (Includes Hybrid Models)

Possible Causes:



Poor connections or loose terminals at ECT sensor 2 and the PCM
 
"Open" in the wire between the PCM and ECT sensor 2
 
Faulty ECT sensor 2
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2195



Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Signal Stuck Lean

Possible Causes:



Dirty or Faulty MAF sensor/IAT sensor (If equipped)
 
Loose A/F sensor
 
Poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM
 
Faulty A/F sensor (Sensor 1)
 
PCM may need to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2197



Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Signal Stuck Lean

Possible Causes:



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

Trouble Code: P2227



Barometric Pressure (BARO) Sensor Circuit Range/Performance Problem

Possible Causes:



Dirty air cleaner element
 
Faulty BARO sensor
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2228



Barometric Pressure (BARO) Sensor Circuit Low Voltage

Possible Causes:



Poor connections or loose terminals at the PCM
 
Faulty BARO sensor
 
PCM needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2229



Barometric Pressure (BARO) Sensor Circuit High Voltage

Possible Causes:



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

Trouble Code: P2237



Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) IP 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: P2238



Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) IP 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 needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2240



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

Possible Causes:



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

Trouble Code: P2241



Front Air/Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) IP 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 needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2243



Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VCENT 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 needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2245



Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VCENT 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 needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2247



Front A/F Sensor (Bank 2, Sensor 1) VCENT 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 needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2249



Front A/F Sensor (Bank 2, Sensor 1) VCENT 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 needs to be updated with the latest software
 
Faulty PCM
 

Trouble Code: P2251



Rear Air/Fuel Ratio (A/F) Sensor (Bank 1, 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: 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: P2273



Front Secondary HO2S (Bank 2, 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: 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: 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
 

 
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