Mazda 3 - Dtc P2096 [Lf]

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
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397
• Start the engine.
• Is the PENDING CODE for this DTC present?
8
VERIFY AFTER REPAIR PROCEDURE
• Perform the "After Repair Procedure".
(See AFTER REPAIR PROCEDURE [LF].)
• Are any DTC present?
Yes
Go to the applicable DTC troubleshooting.
(See DTC TABLE [LF].)
No
Troubleshooting completed.
DTC P2096 [LF]
B3E010202000W04
DTC P2096
Target A/F feedback system too lean
DETECTION
CONDITION
• The PCM monitors the target A/F fuel trim when under the target A/F feedback
control. If the fuel trim is more than the specification, the PCM determines that the
target A/F feedback system is too lean.
Diagnostic support note
• This is a continuous monitor (FUEL SYSTEM).
• 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 the PCM detects the above malfunction condition
during first drive cycle.
• FREEZE FRAME DATA is available.
• The DTC is stored in the PCM memory.
POSSIBLE
CAUSE
• Leakage exhaust gas
• Rear HO2S malfunction
• IAT sensor malfunction
• ECT sensor malfunction
• Air suction in intake-air system
• Front HO2S malfunction
• MAF sensor malfunction
• Insufficient fuel line pressure
• Fuel pump unit malfunction
• Leakage fuel
• Improper operation ignition system
• Insufficient engine compression
• Fuel injector malfunction