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DTC P2228 [L3]

BME010202200W01

DTC P2228 | BARO sensor circuit low input
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DETECTION CONDITION | • PCM monitors input voltage from BARO sensor. If input voltage at PCM terminal 1G is below 0.36 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

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 | CHECK POWER SUPPLY CIRCUIT VOLTAGE AT BARO SENSOR CONNECTOR

  Note

  • If DTCs P0107 and P0122 are also retrieved with P2228, go to REFERENCE VOLTAGE troubleshooting procedure.

• Measure voltage between BARO sensor terminal C (harness-side) and body ground.
• Is voltage within 4.5-5.5 V?
Yes
Go to next step.
No | Check for open circuit between PCM terminal 2K (harness-side) and BARO sensor terminal C (harness-side). Repair or replace suspected harness, then go to Step 8.
6 | INSPECT BARO SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND • Turn ignition key to OFF. • Disconnect PCM connector. • Inspect for continuity between BARO sensor terminal A (harness-side) and body ground. • Is there continuity? | Yes | Repair or replace suspected harness, then go to Step 8.
No | Go to next step.
7 | 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.
8 | VERIFY TROUBLESHOOTING OF DTC P2228 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.