DTC P2228 [LF]

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DTC P2228 [LF]

B3E010201083W01

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 1AG is below 1.99 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 1AG • Open circuit in wiring between BARO sensor terminal C and PCM terminal 1AE • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA HAS BEEN RECORDED • Has FREEZE FRAME DATA been recorded? | Yes | Go to the next step.
No | Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2 | VERIFY RELATED REPAIR INFORMATION AVAILABILITY • Verify related service repair information availability. • Is any related repair information available? | 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.
3 | INSPECT CONNECTION OF BARO SENSOR CONNECTOR • Turn the ignition switch to off. • Verify that BARO sensor connector is connected securely. • Is connection normal? | Yes | Go to the next step.
No | Reconnect the connector, then go to Step 9.
4 | 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 the next step.
5 | INSPECT BARO SENSOR MALFUNCTION • Perform BARO sensor inspection. (See BAROMETRIC PRESSURE (BARO) SENSOR INSPECTION [LF].) • Is BARO sensor normal? | Yes | Go to the next step.
No | Replace BARO sensor, then go to Step 9.

6

INSPECT 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 the next step.

No | Inspect for open circuit between PCM terminal 1AE (harness-side) and BARO sensor terminal C (harness-side). Repair or replace suspected harness, then go to Step 9.
7 | INSPECT BARO SENSOR SIGNAL CIRCUIT FOR SHORT TO GROUND • Turn the ignition switch to off. • Disconnect PCM connector. • Inspect for continuity between BARO sensor terminal B (harness-side) and body ground. • Is there continuity? | Yes | Repair or replace suspected harness, then go to Step 9.
No | Go to the next step.
8 | INSPECT PCM CONNECTOR FOR POOR CONNECTION • Disconnect PCM connector. • Inspect for poor connection at terminals (damaged/pulled-out pins, corrosion, etc.). • Is there malfunction? | Yes | Repair terminal, then go to Step 9.
No | Go to the next step.

9

VERIFY TROUBLESHOOTING OF DTC P2228 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Turn the ignition switch to the ON position (Engine off).
• Clear DTC from memory using WDS or equivalent.
• Start the engine.
• Is same DTC present?

Yes

Replace PCM, then go to the next step.
(See PCM REMOVAL/INSTALLATION [LF].)

No | No concern is detected. Go to the next step.
10 | VERIFY AFTER REPAIR PROCEDURE • Perform "After Repair Procedure". (See AFTER REPAIR PROCEDURE [LF].) • Is there any DTC present? | Yes | Go to applicable DTC troubleshooting. (See DTC TABLE [LF].)
No | Troubleshooting completed.