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.
2002 Chrysler Neon LE, AutomaticFACTORY OEM SERVICE PROCEDURE
Using Odometer Display
- DTCs can be retrieved by cycling ignition switch. To retrieve DTCs, cycle ignition key on-off-on-off-on within 5 seconds. Instrument cluster odometer will display DTC. See DIAGNOSTIC TROUBLE CODE DEFINITIONS . After repair is complete, clear DTCs from PCM memory and perform appropriate verification test. See VERIFICATION TESTS .
- If no DTCs are displayed, odometer will display either P1684 and DONE, or only DONE. DTC P1684 is only a status and indicates that PCM memory has been cleared within the last 50 ignition cycles. No problem exists. DONE indicates that no DTCs are present and procedure is complete. If no DTCs are present go to one of the following:
- For Air Conditioning (A/C) system problems, see appropriate A/C-HEATER SYSTEMS article in AIR CONDITIONING & HEATING.
- For Anti-Lock Brake System (ABS) problems, see appropriate ANTI-LOCK article in BRAKES.
- For charging system problems, see appropriate GENERATORS & REGULATORS article in STARTING & CHARGING SYSTEMS.
- For control module communication problems, see appropriate BODY CONTROL MODULES article in ACCESSORIES & EQUIPMENT.
- For Speed Control (S/C) problems and servicing information, see appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT.
- For starting or driveability problems, see TROUBLE SHOOTING - NO CODES - CARS - EXCEPT SEBRING COUPE & STRATUS COUPE article for diagnosis by symptom.
- For transmission electronic controls system problems, see appropriate DIAGNOSIS article in AUTOMATIC TRANSMISSIONS.
Factory Service Tools
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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.
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