Dtc P2227; Dtc P2228 - Mazda 6 Workshop Manual

DTC P2227

DTC P2227 BARO sensor range/performance problem
• The PCM monitors the input signal from the barometric pressure sensor. If the difference between the
barometric pressure input from the barometric pressure sensor and the manifold absolute pressure is more
than 75 mmHg, the PCM determines that there is a malfunction in the barometric pressure sensor.
Diagnostic support note
DETECTION
• The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or
CONDITION
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.
• FREEZE FRAME DATA is available.
• DTC is stored in the PCM memory.
POSSIBLE
• BARO sensor (integrated in PCM) malfunction
CAUSE
Diagnostic procedure
STEP
1 VERIFY FREEZE FRAME DATA HAS BEEN
RECORDED
• Has FREEZE FRAME DATA been recorded?
2 VERIFY RELATED REPAIR INFORMATION
AVAILABILITY
• Verify related service repair information
availability.
• Is any related repair information available?
3 VERIFY CURRENT SIGNAL STATUS: IS
CONCERN INTERMITTENT OR CONSTANT?
• Connect the WDS or equivalent to the DLC-2.
• Clear the DTC from the PCM memory using
the WDS or equivalent.
• Start the engine.
• Is the PENDING CODE for this DTC present?
4 VERIFY TROUBLESHOOTING OF DTC P2227
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Turn the engine switch to the ON position
(Engine off).
• Clear the DTC from the memory using the
WDS or equivalent.
• Perform the Repair Verification Drive Mode.
(See F2–39 OBD DRIVE
• Is the PENDING CODE for this DTC present?
6 VERIFY AFTER REPAIR PROCEDURE
• Are any DTCs present?
End Of Sie

DTC P2228

DTC P2228 BARO sensor circuit low input
• The PCM monitors the input signal from the barometric pressure sensor. If the voltage from the barometric
pressure sensor is less than 0.4 V, the PCM determines that there is a malfunction in the barometric
pressure sensor signal system.
DETECTION
Diagnostic support note
CONDITION
• The MIL illuminates if the PCM detects the above malfunction condition during the first drive cycle.
• FREEZE FRAME DATA is available.
• The DTC is stored in the PCM memory.
POSSIBLE
• BARO sensor (integrated in PCM) malfunction
CAUSE
ON-BOARD DIAGNOSTIC
INSPECTION
MODE.)
Yes Go to the next step.
No Record the FREEZE FRAME DATA on the repair order,
then go to the next step.
Yes Perform repair or diagnosis according to the available
repair information.
• If the vehicle is not repaired, go to the next step.
No Go to the next step.
Yes Go to the next step.
No Intermittent concern exists.
Perform the "INTERMITTENT CONCERNS
TROUBLESHOOTING".
Yes Replace the PCM, then go to the next step.
No No concern is detected. Go to the next step.
Yes Go to the applicable DTC inspection.
(See F2–40 DTC TABLE.)
No Troubleshooting completed.
B6E407002200101
ACTION
B6E407002200102
F2–197
F2