Dtc P2196 [Lf] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
• Is the PENDING CODE for this DTC present?
VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
14
(See AFTER REPAIR PROCEDURE
• Is there any DTC present?
DTC P2196
• The PCM monitors the front HO2S output voltage when the following conditions are
met. If output voltage is more than 0.45 V for 41 s, the PCM determines that the front
HO2S signal remains rich.
MONITORING CONDITION
Diagnostic support note
DETECTION
CONDITION
• This is a continuous monitor (HO2S).
• MIL illuminates if PCM detects the above malfunctioning condition in two
consecutive drive cycles or in one drive cycle while the DTC for the same
malfunction has been stored in the PCM.
• PENDING CODE is available if PCM detects the above malfunction conditions
during first drive cycle.
• FREEZE FRAME DATA is available.
• DTC is stored in the PCM memory.
• Front HO2S malfunction
• Fuel injector malfunction
• Excessive fuel pressure
POSSIBLE • Restriction in intake-air system
CAUSE
• MAF sensor malfunction
• ECT sensor malfunction
• PCM malfunction
Diagnostic procedure
STEP
Downloaded from
[LF].)

DTC P2196 [LF]

Front HO2S signal stuck rich
- Fuel injection control system status: feedback zone
- ECT: more than 70 °C {158 °F}
- Engine speed: more than 1,500 rpm
INSPECTION
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Go to the applicable DTC inspection.
Yes
(See DTC TABLE [LF].)
No Troubleshooting completed.
ACTION
- automotive repair manuals website
B3E010202100W06