DTC P2196, P2198 [MZI-3.7]
DTC P2196, P2198 (MZI-3.7) DETECTION CONDITIONS AND POSSIBLE CAUSES
DIAGNOSTIC PROCEDURE
DTC P2196, P2198 (MZI-3.7) DIAGNOSTIC PROCEDURE
z
Is the PENDING CODE for this DTC
present?
14
VERIFY AFTER REPAIR PROCEDURE
z
Perform "AFTER REPAIR
PROCEDURE". (See
AFTER
REPAIR PROCEDURE [MZI-3.7]
.)
z
Are any DTC present?
Yes Go to the applicable DTC inspection. (See
DTC TABLE [MZI-3.7]
.)
No
Troubleshooting completed.
DTC P2196
P2196: Front HO2S (RH) signal stuck rich
DTC P2198
P2198: Front HO2S (LH) signal stuck rich
DETECTION
CONDITION
z
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
POSSIBLE
CAUSE
z
Front HO2S malfunction
z
Fuel injector malfunction
z
Insufficient fuel line pressure
z
Leakage exhaust gas
z
Air suction at intake-air system malfunction
z
Leakage fuel
z
MAF sensor malfunction
z
ECT sensor malfunction
z
PCM malfunction
STEP
INSPECTION
ACTION
1
VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED
z
Has FREEZE FRAME DATA been
recorded?
Yes Go to the next step.
No
Record FREEZE FRAME DATA on the repair
order, then go to the next step.
2
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
z
Verify related Service Bulletins
and/or online repair information
availability.
Yes
Perform repair or diagnosis according to the
available Service Bulletins.
z
If the vehicle is not repaired, go to the next
step.
2008 Mazda CX-9 Grand Touring
2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:08:43 AM
Page 413
© 2005 Mitchell Repair Information Company, LLC.