DTC Description
OBD Status
P2270 SECONDARY HO2S (SENSOR 2) CIRCUIT SIGNAL STUCK LEAN
Does the HDS indicate PASSED, FAILED, or NOT COMPLETED?
PASSED : Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated, go to the
indicated DTC's troubleshooting.
FAILED : Go to step 1 and recheck.
NOT COMPLETED : Meet the test condition, and check the OBD STATUS again.
DTC P2279: INTAKE AIR SYSTEM LEAK
Fig. 401: DTC Troubleshooting Flow Chart (P2279)
Courtesy of AMERICAN HONDA MOTOR CO., INC.
NOTE:
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Before you troubleshoot, record all freeze data and any on-board
snapshot, and review the general troubleshooting information See HOW
TO TROUBLESHOOT THE A/T SYSTEM or HOW TO TROUBLESHOOT THE
FUEL AND EMISSIONS SYSTEMS .
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If DTC P0443 is stored at the same time as DTC P2279, troubleshoot DTC
P0443 first, then recheck for DTC P2279.
DTC Description
Confirmed DTC
Pending DTC Freeze Frame
P2279 INTAKE AIR SYSTEM LEAK
1. Intake air system visual check:
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1. Check for vacuum leaks at these parts:
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PCV valve
PCV hose
Purge (PCS) line
Throttle body
Intake manifold
Brake booster
Brake booster hose
Are the parts OK?
YES : Go to step 2.
NO : Repair or replace any leaking part(s), then do the repair verification .
2. Problem verification:
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1. Let the engine cool until the value of ECT SENSOR 1 is 140 Β°F (60 Β°C) or less.
Current conditions
Signal
Values
Unit
ECT SENSOR 1
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2. Clear the DTC with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or
HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
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3. Start the engine, and let it idle for 10 seconds or more.
4. Monitor the OBD STATUS for DTC P2279 with the HDS.
DTC Description
OBD Status
P2279 INTAKE AIR SYSTEM LEAK
Does the HDS indicate FAILED?
YES : The failure is duplicated. Check the camshaft timing and adjust it if needed, then do the repair
verification .
NO : If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for vacuum
leaks at the PCV valve, the PCV hose, the purge (PCS) line, the throttle body, the intake manifold, the
brake booster, and the brake booster hose. If the HDS indicates EXECUTING, keep idling until a result
comes on. If the HDS indicates OUT OF CONDITION, go to step 2-1 . and recheck.
REPAIR VERIFICATION (OBD STATUS CHECK)
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1. Turn the ignition switch to LOCK (0).
2. Reconnect all connectors.
3. Turn the ignition switch to ON (II).
4. Reset the PCM with the HDS See HOW TO TROUBLESHOOT THE A/T SYSTEM or HOW
TO TROUBLESHOOT THE FUEL AND EMISSIONS SYSTEMS .
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5. DO THE PCM IDLE LEARN PROCEDURE .
6. Let the engine cool until the value of ECT SENSOR 1 is 140 Β°F (60 Β°C) or less.
Current conditions
Signal
Values
Unit
ECT SENSOR 1
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7. Start the engine, and let it idle for 10 seconds or more.
8. Monitor the OBD STATUS for DTC P2279 in the DTCs MENU with the HDS.
DTC Description
OBD Status
P2279 INTAKE AIR SYSTEM LEAK
Does the HDS indicate PASSED, FAILED, EXECUTING, or OUT OF CONDITION?
PASSED : Troubleshooting is complete. If any other Pending or Confirmed DTCs were indicated, go to the
indicated DTC's troubleshooting.
FAILED : Go to step 1 and recheck.
EXECUTING : Keep the test condition until a result comes on.
OUT OF CONDITION Meet the test condition, and check the OBD STATUS again.
DTC P2422: EVAP CANISTER VENT SHUT VALVE STUCK CLOSED
MALFUNCTION
Fig. 402: DTC Troubleshooting Flow Chart (P2422)
2024 Honda CR-V Owner's Manual
2023 Honda CR-V Owner's Manual
2021 Honda CR-V Owner's Manual
2018 Honda CR-V Owner's Manual
2015 Honda CR-V Owner's Manual
