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DTC P2229 [L3]

BME010202200W02

DTC P2229 | BARO sensor circuit high input
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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
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1 | PERFORM DTC CONFIRMATION PROCEDURE • Perform DTC CONFIRMATION PROCEDURE. (See DTC CONFIRMATION PROCEDURE [L3].) • Is same DTC present? | Yes | Go to next step.
No | Intermittent concern exists. Go to INTERMITTENT CONCERN TROUBLESHOOTING procedure. (See INTERMITTENT CONCERN TROUBLESHOOTING [L3].)
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. (See BAROMETRIC PRESSURE (BARO) SENSOR INSPECTION [L3].) • 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.
(See KOEO/KOER SELF-TEST PROCEDURE [L3].)
• Is same DTC present?
Yes
Replace PCM, then go to next step.
(See PCM REMOVAL/INSTALLATION [L3].)
No | No concern is detected. Go to next step.
9 | VERIFY AFTER REPAIR PROCEDURE • Perform "After Repair Procedure". (See AFTER REPAIR PROCEDURE [L3].) • Is there any DTC present? | Yes | Go to applicable DTC troubleshooting. (See DTC TABLE [L3].)
No | Troubleshooting completed.