Honda Accord 2008 Manual page 508

07/11/02 09:10:08 61TA0000_110_0189
DTC P2A00: A/F Sensor (Sensor 1) Circuit
Range/Performance Problem
NOTE: Before you troubleshoot, record all freeze data
and any on-board snapshot, and review the general
troubleshooting information (see page 11-3).
1. Turn the ignition switch to ON (II).
2. Clear the DTC with the HDS.
3. Start the engine. Hold the engine speed at
3,000 rpm without load (A/T in P or N, M/T in
neutral) until the radiator fan comes on, then let it
idle.
4. Test-drive under these conditions:
• Engine coolant temperature (ECT SENSOR 1)
above 158 °F (70 °C)
• A/T in D, M/T in 3rd
• Vehicle speed between 25 55 mph (40
88 km/h) for 5 minutes
• Drive at a steady speed between 55 75 mph
(88 120 km/h) for 10 seconds, then decelerate −
(with throttle fully closed) for 5 seconds
5. Monitor the OBD STATUS for DTC P2A00 in the
DTCs MENU with the HDS.
Does the screen indicate F AILED?
−
YES Go to step 6.
NO − If the screen indicates PASSED, intermittent
failure, the system is OK at this time. Check for
poor connections or loose terminals at the A/F
sensor (Sensor 1) and the ECM/PCM. If the screen
indicates EXECUTING, keep driving until a result
comes on. If the screen indicates OUT OF
CONDITION or NOT COMPLETED, go to step 3 and
recheck.
6. Turn the ignition switch to LOCK (0).
7. Replace the A/F sensor (Sensor 1) (see page
11-225).
8. Turn the ignition switch to ON (II).
9. Reset the ECM/PCM with the HDS.
10. Do the ECM/PCM idle learn procedure (see page
11. Test-drive under these conditions:
12. Check for Temporary DTCs or DTCs with the HDS.
− −
−
13. Monitor the OBD STATUS for DTC P2A00 in the
ＴＡ０８ＡＥＡＫ７２１０００９２Ａ００ＦＡＡＴ３０
11-343).
• Engine coolant temperature (ECT SENSOR 1)
above 158 °F (70 °C)
• A/T in D, M/T in 3rd
−
• Vehicle speed between 25 55 mph (40
88 km/h) for 5 minutes
• Drive at a steady speed between 55 75 mph
(88 120 km/h) for 10 seconds, then decelerate −
(with throttle fully closed) for 5 seconds
Is DT C P2A00 indicated?
YES − Check for poor connections or loose
terminals at the A/F sensor (Sensor 1) and the ECM/
PCM, then go to step 1.
NO − Go to step 13.
DTCs MENU with the HDS.
Does the screen indicate PASSED?
YES − Troubleshooting is complete. If any other
Temporary DTCs or DTCs were indicated in step 12,
go to the indicated DTC's troubleshooting.
−
NO If the screen indicates FAILED, check for poor
connections or loose terminals at the A/F sensor
(Sensor 1) and the ECM/PCM, then go to step 1. If
the screen indicates EXECUTING, keep driving until
a result comes on. If the screen indicates OUT OF
CONDITION or NOT COMPLETED, go to step 11.
−
−
11-189