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Home >> Jeep >> 1994 >> Grand Cherokee Laredo, 5.2 Y, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 5.2L >> Trouble Codes/Messages >> CODES/MESSAGES (Note: For DTC table, see TEST TC-1A under "Testing.") >> Code 12
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Code 12

DRB displays BATTERY DISCONNECT. Condition is: Direct battery input to Powertrain Control Module (PCM) disconnected within last 50 key-on cycles.

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