Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSDODGE AND RAM1999VIPER RT/10REPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTMEMORY MODULESELECTRONIC CONTROL MODULESDESCRIPTION & OPERATIONPOWERTRAIN CONTROL MODULERETRIEVING DIAGNOSTIC TROUBLE CODES (DTCS) USING IGNITION KEY & ODOMETER
1999 Dodge and Ram Viper RT/10
Retrieving Diagnostic Trouble Codes (DTCs) Using Ignition Key & Odometer
1999 Dodge and Ram Viper RT/10SECTION Retrieving Diagnostic Trouble Codes (DTCs) Using Ignition Key & Odometer
- Cycle ignition key On - Off- On - Off- On within 5 seconds. The Odometer will show P-code for DTC code number. Refer to Emission section for DTC chart for a detailed explanation of DTC codes.
- If no DTC's are present, cluster will display one of two texts: "P1684" and DONE or only DONE.
- P1684 is only a status and indicates that PCM memory has been cleared within last 50 ignition cycles and does not indicate a problem.
- DONE indicates that NO DTCs are present and procedure is complete.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.