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DTC P1623
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Code word or key ID number read/write error in PCM
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DETECTION CONDITION |
• PCM internal EEPROM damaged.
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POSSIBLE CAUSE |
• PCM internal EEPROM damaged.
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Diagnostic procedure
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STEP
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INSPECTION
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ACTION
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1
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PERFORM DTC CONFIRMATION PROCEDURE
• Perform DTC CONFIRMATION PROCEDURE.
• Is same DTC present?
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Yes
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Go to the next step.
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No
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Intermittent concern exists. Go to INTERMITTENT CONCERN TROUBLESHOOTING procedure.
Then go to the next step.
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2
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VERIFY DTC P1623 DETECTED AGAIN
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Perform KOEO self-test.
• Is the same DTC present?
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Yes
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Replace the PCM, then go to the next step.
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No
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Go to the next step.
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3
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VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
(See AFTER REPAIR PROCEDURE [L3].)
• Is there any DTC present?
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Yes
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Go to the applicable DTC inspection.
(See DTC TABLE [L3].)
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No
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Troubleshooting completed.
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