Mazda 3 - Dtc P2195 [Z6]

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
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222
• Remove the EGR valve.
(See EGR VALVE
REMOVAL/INSTALLATION [Z6].)
• Does the EGR valve stuck open?
(See EGR VALVE REMOVAL/INSTALLATION
[Z6].)
No
Go to the next step.
16
VERIFY TROUBLESHOOTING OF DTC
P2188 COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear the DTC from the PCM memory
using the WDS or equivalent.
• Perform the "PCM Adaptive Memory
Produce Drive Mode".
(See OBD DRIVE MODE [Z6].)
• Is the PENDING CODE for this DTC
present?
Yes
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [Z6].)
No
Go to the next step.
17
VERIFY AFTER REPAIR PROCEDURE
• Perform the "AFTER REPAIR
PROCEDURE".
(See AFTER REPAIR PROCEDURE [Z6].)
• Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [Z6].)
No
DTC troubleshooting completed.
DTC P2195 [Z6]
B3E010202100W11
DTC P2195
Front HO2S signal stuck lean
DETECTION
CONDITION
• The PCM monitors the front HO2S output voltage when the following conditions are
met. If the output voltage is less than 0.45 V for 46 s, the PCM determines that the
front HO2S signal remains lean.
MONITORING CONDITION
- Fuel injection control system status: feedback zone
- ECT is more than 70 °C {158 °F}.
- Engine speed is more than 1,500 rpm.
Diagnostic support note
• This is a continuous monitor. (HO2S)
• The MIL illuminates if the 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.