DTC P2229 [L3]

BME010202200W02

DTC P2229

BARO sensor circuit high input

DETECTION CONDITION

• PCM monitors input voltage from BARO sensor. If input voltage at PCM terminal 1G is above 4.92 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
• Open circuit in wiring between BARO sensor terminal A and PCM terminal 1G
• BARO sensor signal circuit is shorted to reference voltage supply circuit.
• PCM malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
PERFORM DTC CONFIRMATION PROCEDURE
• Perform DTC CONFIRMATION PROCEDURE.
• Is same DTC present?
Yes
Go to next step.
No
Intermittent concern exists. Go to INTERMITTENT CONCERN TROUBLESHOOTING procedure.
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 any malfunction?
Yes
Repair or replace suspected terminal, then go to Step 8.
No
Go to next step.
4
INSPECT BARO SENSOR MALFUNCTION
• Perform BARO sensor inspection.
• Is BARO sensor okay?
Yes
Go to next step.
No
Replace BARO sensor, then go to Step 8.
5
VERIFY BARO SENSOR SIGNAL CIRCUIT FOR SHORT TO REFERENCE VOLTAGE CIRCUIT
• Measure voltage between BARO sensor terminal B and body ground.
• Is voltage above 4.92 V?
Yes
Repair or replace short to power harness, then go to Step 8.
No
Go to next step.
6
INSPECT PCM CONNECTOR FOR POOR CONNECTION
• Disconnect PCM connector.
• Inspect for poor connection at terminal 2H (damaged/pulled-out pins, corrosion, etc.).
• Is there any malfunction?
Yes
Repair terminal, then go to Step 8.
No
Go to next step.
7
VERIFY BARO SENSOR GROUND CIRCUIT FOR OPEN CIRCUIT
• Inspect for continuity following between BARO sensor PCM terminal.
- BARO sensor terminal A and PCM terminal 1G
- BARO sensor terminal B and PCM terminal 2H
• Is there continuity?
Yes
Go to next step.
No
Repair or replace open harness, then go to Step 8.
8
VERIFY TROUBLESHOOTING OF DTC P2229 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Turn ignition key to ON (Engine OFF).
• Clear DTC from memory using WDS or equivalent.
• Perform KOEO/KOER self-test.
• Is same DTC present?
Yes
Replace PCM, then go to next step.
No
No concern is detected. Go to next step.
9
VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
• Is there any DTC present?
Yes
Go to applicable DTC troubleshooting.
No
Troubleshooting completed.