• HEADINGS
  • Component Location Index
  • DTC Troubleshooting
    • DTC P2279: Intake Air System Leak Detected
  • PCV Valve Inspection
  • PCV Valve Replacement
• FIGURES
  • Fig. 1: Identifying PCV System Component Location
  • Fig. 2: Identifying PCV Valve And Hoses
  • Fig. 3: Pinching Hose With Plier
  • Fig. 4: Identifying PCV Valve And Washer W/Torque Specification
• TABLES

2004-08 ENGINE PERFORMANCE

PCV System - TSX

Component Location Index

Fig. 1: Identifying PCV System Component Location
Courtesy of AMERICAN HONDA MOTOR CO., INC.

DTC Troubleshooting

DTC P2279: Intake Air System Leak Detected

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot, and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ). If DTC P0443 is stored at the same time as DTC P2279, troubleshoot DTC P0443 first, then recheck for DTC P2279.

1. Check for vacuum leaks at these parts:
   • PCV valve
   • PCV hose
   • Purge (PCS) line
   • Throttle body
   • Intake manifold
   • Brake booster hose
   • Brake booster

   Are the parts OK?

   YES - Go to step 2.

   NO - Repair or replace the leaking part(s), then go to step 4.

2. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on, then let it idle for 1 minute.
3. Monitor the OBD STATUS for DTC P2279 in the DTCs MENU with the HDS.

   Does the screen indicate FAILED?

   YES - Check the camshaft timing (see CAM CHAIN INSTALLATION ), then go to step 4.

   NO - If the screen indicates PASSED, intermittent failure, the system is OK at this time. If the screen indicates NOT COMPLETED, go to step 2 and recheck.

4. Reset the ECM/PCM with the HDS.
5. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).
6. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on, then let it idle for 1 minute.
7. Check for Temporary DTCs or DTCs with the HDS.

   Is DTC P2279 indicated?

   YES - Check for vacuum leaks at the PCV valve, the PCV hose, the purge (PCS) line, the throttle body, the brake booster, or the brake booster hose, then go to step 4.

   NO - Go to step 8.

8. Monitor the OBD STATUS for DTC P2279 with the HDS.

   Does the screen indicate PASSED?

   YES - Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 7, go to the indicated DTCs troubleshooting.

   NO - If the screen indicates FAILED, go to step 1. If the screen indicates NOT COMPLETED, keep idling until a result comes on.

PCV Valve Inspection

1. Check the PCV valve (A), hoses (B), and connections for leaks or restrictions.

   Fig. 2: Identifying PCV Valve And Hoses
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

2. At idle, make sure there is a clicking sound from the PCV valve when the hose between the PCV valve and intake manifold is lightly pinched (A) with your fingers or pliers.

   If there is no clicking sound, check the PCV valve washer for cracks or damage. If the washer is OK, replace the PCV valve and recheck.

   Fig. 3: Pinching Hose With Plier
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

PCV Valve Replacement

1. Disconnect the PCV hose.
2. Remove the PCV valve (A).

   Fig. 4: Identifying PCV Valve And Washer W/Torque Specification
   Courtesy of AMERICAN HONDA MOTOR CO., INC.

3. Install the parts in the reverse order of removal with a new washer (B).