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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 FUEL AND EMISSIONS
SYSTEMS or HOW TO TROUBLESHOOT THE A/T SYSTEM .
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5. DO THE PCM IDLE LEARN PROCEDURE .
6. Monitor the OBD STATUS for DTC P2252 in the DTCs MENU with the HDS.
DTC Description
OBD Status
P2252 A/F SENSOR (SENSOR 1) AFS-CIRCUIT LOW VOLTAGE
Does the HDS indicate PASSED, FAILED, or NOT COMPLETED?
PASSED : Troubleshooting is complete. If the PCM was substituted, replace the original PCM See PCM
REMOVAL AND INSTALLATION or PCM UPDATE . If any other Pending or Confirmed DTCs are
indicated, go to the indicated DTC's troubleshooting.
FAILED : Go to step 1 and recheck. If the PCM was updated, substitute a known-good PCM See PCM
REMOVAL AND INSTALLATION or PCM UPDATE , then check the OBD STATUS again.
NOT COMPLETED : Keep idling until a result comes on.
DTC P2270: SECONDARY HO2S (SENSOR 2) CIRCUIT SIGNAL STUCK
LEAN
NOTE:
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 .
Confirmed
DTC
Pending
DTC
Freeze
Frame
DTC Description
P2270 SECONDARY HO2S (SENSOR 2) CIRCUIT
SIGNAL STUCK LEAN
1. Problem verification:
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1. Turn the ignition switch to ON (II).
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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. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator
fan comes on, then let it idle.
4. Test-drive under these conditions:
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Engine coolant temperature (ECT SENSOR 1) above 158 Β°F (70 Β°C)
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Transmission in D
Engine speed between 1, 500-3, 000 rpm
Drive 30 seconds or more
Current conditions
Signal
Values
Unit
ECT SENSOR 1
ENGINE SPEED
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5. Monitor the OBD STATUS for DTC P2270 with the HDS.
DTC Description
OBD Status
P2270 SECONDARY HO2S (SENSOR 2) CIRCUIT SIGNAL STUCK LEAN
Does the HDS indicate FAILED?
YES : REPLACE THE SECONDARY HO2S (SENSOR 2) , then do the repair verification .
NO : If the HDS indicates PASSED, intermittent failure, the system is OK at this time. Check for poor
connections or loose terminals at secondary HO2S (Sensor 2) and the PCM. If the HDS indicates NOT
COMPLETED, go to step 1-3 and recheck.
REPAIR VERIFICATION (OBD STATUS CHECK)
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1. Turn the ignition switch to ON (II).
2. Reset the PCM with the HDS See HOW TO TROUBLESHOOT THE FUEL AND EMISSIONS
SYSTEMS or HOW TO TROUBLESHOOT THE A/T SYSTEM .
ο‘
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3. DO THE PCM IDLE LEARN PROCEDURE .
4. Start the engine. Hold the engine speed at 3, 000 rpm without load (in P or N) until the radiator fan
comes on, then let it idle.
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5. Test-drive under these conditions:
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ο¬
ο¬
ο¬
Engine coolant temperature (ECT SENSOR 1) above 158 Β°F (70 Β°C)
Transmission in D
Engine speed between 1, 500-3, 000 rpm
Drive 30 seconds or more
Current conditions
Signal
Values
Unit
ECT SENSOR 1
ENGINE SPEED
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6. Monitor the OBD STATUS for DTC P2270 in the DTCs MENU with the HDS.
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
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
