F–172
ON-BOARD DIAGNOSTIC
DTC P2228
A6E397001083W06
Diagnostic procedure
DTC P2228 BARO sensor circuit low input
DETECTION
CONDITION
• PCM monitors input voltage from BARO sensor. If input voltage at PCM terminal 1G is below 0.35 V, PCM
determines that BARO sensor circuit has malfunction.
Diagnostic support note
• This is a continuous monitor (CCM).
• MIL illuminates if PCM detects the above malfunction condition during first drive cycle.
• PENDING CODE is available if PCM detects the above malfunction condition.
• FREEZE FRAME DATA is available.
• DTC is stored in PCM memory.
POSSIBLE
CAUSE
• BARO sensor malfunction
• Connector or terminal malfunction
• Short to ground in wiring between BARO sensor terminal A and PCM terminal 1G
• Open circuit in wiring between BARO sensor terminal C and PCM terminal 2K
• PCM malfunction
STEP INSPECTION ACTION
1 PERFORM DTC CONFIRMATION PROCEDURE
• Perform DTC CONFIRMATION PROCEDURE.
(See F–66 DTC CONFIRMATION
PROCEDURE.)
• Is same DTC present?
Yes Go to next step.
No Intermittent concern exists. Go to INTERMITTENT
CONCERN TROUBLESHOOTING procedure.
(See F–227 INTERMITTENT CONCERN
TROUBLESHOOTING.)
2 INSPECT CONNECTION OF BARO SENSOR
CONNECTOR
• Turn ignition key to OFF.
• Verify that BARO sensor connector is
connected securely.
• Is connection okay?
Yes Go to next step.
No Reconnect the connector, then go to Step 8.
3 INSPECT BARO SENSOR CONNECTOR FOR
POOR CONNECTION
• Disconnect the BARO sensor connector.
• Inspect for poor connection (damaged/pulled-
out pins, corrosion, etc.).
• Is there malfunction?
Yes Repair or replace suspected terminal, then go to Step 8.
No Go to next step.
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