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Home >> Dodge or Ram Truck >> 2000 >> RAM 2500 Truck 2WD L6-5.9L DSL Turbo VIN 6 >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> P Code Charts >> P1688

P1688

Tests 1 - 2:





SYMPTOM
P1688 - INTERNAL FUEL INJECTION PUMP FAILURE

POSSIBLE CAUSES
- Fuel injection pump (DTC counter)
- Fuel injection pump (trip counter)

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