Honda ACCORD HYBRID 2005 Service Manual page 386

PGM-FI System
D T C T r o u b l e s h o o t i n g ( c o n t ' d )
DTC P1172: Rear A/F Sensor (Bank 1,
Sensor 1) Out of Range High
DTC P1174: Front A/F Sensor (Bank 2,
Sensor 1) Out of Range High
NOTE: Information marked w i t h an asterisk (*) applies
to the front bank (Bank 2).
1. Turn the ignition switch ON (II).
2. Clear the DTC w i t h the HDS.
3. Start the engine. Hold the engine speed at
3,000 r p m w i t h o u t load (in Park or neutral) until the
radiator fan comes o n , then let it idle.
4. M o n i t o r the OBD STAUS for P1172 and/or P1174*
in the DTCs MENU w i t h the HDS.
Does the screen indicate FAILED?
Y E S — G o t o step 5.
NO—If the screen indicates PASSED, intermittent
failure, system is OK at this t i m e . Check for poor
connections or loose t e r m i n a l s at the A/F sensor
(Sensor 1) and the PCM. If the screen indicates
EXECUTING, keep driving until a result comes o n . If
the screen indicates O U T OF CONDITION, go to
step 3 and recheck.
5. Turn the ignition switch OFF.
6. Replace the A/F sensor (Sensor 1) (see page
11-213).
7. Turn the ignition switch ON (II).
8. Reset the PCM w i t h the HDS.
9. Do the PCM idle learn procedure (see page 11-340).
10. Start the engine. Hold the engine speed at
3,000 r p m w i t h t o u t load (in Park or neutral) until the
radiator fan comes o n , then let it idle.
11. Check for T e m p o r a r y DTCs or DTCs w i t h the HDS.
Are any Temporary DTCs or DTCs indicated?
Y E S - l f DTC P1172 and/or P1174* is indicated,
check for poor connections or loose terminals at
the A/F sensor (Sensor 1) and the PCM, then go t o
step 1. If any other T e m p o r a r y DTCs or DTCs are
indicated, go to the indicated D T C s
t r o u b l e s h o o t i n g .
NO—Go to step 12.
12. Monitor the OBD STATUS for DTC P1172 and/or
P1174* in the DTCs MENU w i t h the HDS.
Does the screen indicate PASSED?
Y E S — T r o u b l e s h o o t i n g is complete. •
NO—If the screen indicates FAILED, check f o r poor
connections or loose t e r m i n a l s at the A/F sensor
(Sensor 1) and the PCM, then go to step 1. If the
screen indicates EXECUTING, keep driving until a
result comes o n . If the screen indicates O U T OF
CONDITION, go to step 10 and recheck.
11-146