Mazda CX-9 Grand Touring 2009 Manual page 1277

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Is the PENDING CODE for this DTC
present?
VERIFY AFTER REPAIR PROCEDURE
Perform "AFTER REPAIR
14
PROCEDURE". (See AFTER
REPAIR PROCEDURE [MZI-3.7].)
Are any DTC present?
DTC P2196, P2198 [MZI-3.7]
DTC P2196, P2198 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DTC P2196 P2196: Front HO2S (RH) signal stuck rich
DTC P2198 P2198: Front HO2S (LH) signal stuck rich
DETECTION
CONDITION
POSSIBLE
CAUSE
DIAGNOSTIC PROCEDURE
DTC P2196, P2198 (MZI-3.7) DIAGNOSTIC PROCEDURE
STEP INSPECTION
VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED
1
Has FREEZE FRAME DATA been
recorded?
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
2
Verify related Service Bulletins
and/or online repair information
availability.
2008 Mazda CX-9 Grand Touring
A HO2S indicating rich at the end of a test is trying to correct for an over-rich
condition. The test fails when the fuel control system no longer detects
switching for a calibrated amount of time
Front HO2S malfunction
Fuel injector malfunction
Insufficient fuel line pressure
Leakage exhaust gas
Air suction at intake-air system malfunction
Leakage fuel
MAF sensor malfunction
ECT sensor malfunction
PCM malfunction
Yes Go to the next step.
No
Yes
Go to the applicable DTC inspection. (See
Yes
DTC TABLE [MZI-3.7].)
No Troubleshooting completed.
ACTION
Record FREEZE FRAME DATA on the repair
order, then go to the next step.
Perform repair or diagnosis according to the
available Service Bulletins.
If the vehicle is not repaired, go to the next
step.