Dtc P2188 [Z6] - Mazda 3 Workshop Manual

Mazda 3 Workshop Manual – Engine + Wiring Diagrams + Diagnostic Trouble Codes
• Inspect the fuel injector (resistance,
injection amount).
(See FUEL INJECTOR
• Is the fuel injector normal?
VERIFY TROUBLESHOOTING OF DTC
P2187 COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear the DTC from the PCM memory
using the WDS or equivalent.
17
• Perform the "PCM Adaptive Memory
Produce Drive Mode".
(See OBD DRIVE MODE
• Is the PENDING CODE for this DTC
present?
VERIFY AFTER REPAIR PROCEDURE
• Perform the "AFTER REPAIR
PROCEDURE".
18
(See AFTER REPAIR PROCEDURE
• Are any DTCs present?
DTC P2188
• The PCM monitors the short term fuel trim (SHRTFT) and long term fuel trim
(LONGFT) during the closed loop fuel control at idle. If the LONGFT or the sum total
of these fuel terms exceed the preprogrammed criteria, PCM determines that fuel
system is too rich at idle.
Diagnostic support note
• This is a continuous monitor. (Fuel system)
• MIL illuminates if PCM detects the above malfunctioning condition in two consecutive
DETECTION
CONDITION
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.
• The DTC is stored in the PCM memory.
• Misfire
POSSIBLE
CAUSE
Downloaded from
INSPECTION.)
Yes
No Go to the next step.
[Z6].)
Yes
[Z6].)
No DTC troubleshooting completed.

DTC P2188 [Z6]

System too rich at idle
https://carmanualshub.com/
Replace the PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION
Go to the applicable DTC inspection.
(See DTC TABLE [Z6].)
- automotive repair manuals website
[Z6].)
B3E010202100W10