Honda ACCORD HYBRID 2005 Service Manual page 419

DTC P2A00: Rear A/F Sensor (Bank 1,
Sensor 1) Range/Performance Problem
DTC P2A03: Front A/F Sensor (Bank 2,
Sensor 1) Range/Performance Problem
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 rpm w i t h o u t load (in Park or neutral) until the
radiator fan comes o n , then let it idle.
4. Test-drive under these conditions:
• Engine coolant temperature above 158 °F (70 °C)
• Transmission in D position
• Vehicle speed at 30 m p h (48 km/h) or more, and
engine speed at 2,600 rpm or less
• Drive w i t h the throttle fully opened for 5 seconds
f r o m an engine speed of 1,600 r p m , then slow
d o w n w i t h the throttle completely closed.
5. Monitor the OBD STATUS for DTC P2A00 and/or
P2A03* in the DTCs MENU w i t h the HDS.
Does the screen indicate FAILED?
Y E S — G o t o step 7.
NO—If the screen indicates PASSED, intermittent
failure, system is OK at this t i m e . Check for poor
connections or loose terminals at the A/F sensor
(Sensor 1) and the PCM. If it is EXECUTING, keep
driving until a result comes on. If the screen
indicates OUT OF CONDITION, go to step 3 and
recheck.
6. Turn the ignition switch OFF.
7. Replace the A/F sensor (Sensor 1) (see page
11-213).
8. Turn the ignition switch ON (II).
9. Reset the PCM w i t h the HDS.
10. Do the PCM idle learn procedure (see page 11-340).
11. Test-drive under these conditions:
• Engine coolant temperature above 158 °F (70 °C)
• Transmission in D position
• Vehicle speed at 30 m p h (48 km/h) or m o r e , and
engine speed at 2,600 rpm or less
• Drive w i t h the throttle fully opened for 5 seconds
f r o m an engine speed of 1,600 r p m , then s l o w
d o w n w i t h the throttle completely closed.
12. Check for Temporary DTCs or DTCs w i t h the HDS.
Are any Temporary DTCs or DTCs indicated?
Y E S - l f DTC P2A00 and/or P2A03* is indicated,
check for poor connections or loose terminals at
the A/F sensor (Sensor 1) and the PCM, then go to
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
troubleshooting.
NO—Go to step 13.
13. Monitor the OBD STATUS for DTC P2A00 and/or
P2A03* 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 c o m p l e t e . •
NO—If the screen indicates FAILED, check for poor
connections or loose terminals at the A/F sensor
(Sensor 1) and the PCM, then go to step 1. If the
screen indicates EXECUTING, keep d r i v i n g until a
result comes on. If the screen indicates OUT OF
CONDITION, g o t o step 10 and recheck.
11-179