Honda Accord 2008 Manual page 482

07/11/02 09:09:11 61TA0000_110_0163
DTC P1172: A/F Sensor (Sensor 1) Circuit Out
of Range High
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. Monitor the OBD STATUS for DTC P1172 in the
DTCs MENU with the HDS.
Does the screen indicate F AILED?
−
YES Go to step 5.
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 idling until a result
comes on. If the screen indicates OUT OF
CONDITION or NOT COMPLETED, go to step 3 and
recheck.
5. Turn the ignition switch to LOCK (0).
6. Replace the A/F sensor (Sensor 1) (see page
11-225).
7. Turn the ignition switch to ON (II).
8. Reset the ECM/PCM with the HDS.
9. Do the ECM/PCM idle learn procedure (see page
11-343).
10. 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.
11. Check for Temporary DTCs or DTCs with the HDS.
Is DT C P117 2 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 12.
12. Monitor the OBD STATUS for DTC P1172 in the
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 11,
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 idling until
a result comes on. If the screen indicates OUT OF
CONDITION or NOT COMPLETED, go to step 10.
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11-163