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, StandardFACTORY OEM SERVICE PROCEDURE

DTC P1602: Pcm Not Programmed: Testing

NOTE: If engine will not start, crank engine for 15 seconds. Crank at least 2 times with the ignition switch returning to the OFF position each time.

With DRBIII(R), attempt to program PCM. See POWERTRAIN CONTROL MODULE under PROGRAMMING. Start the engine and allow the engine to reach normal operating temperature. With the DRBIII(R), read DTCs. Does the DTC reset? If yes, replace PCM. Program the new PCM. See POWERTRAIN CONTROL MODULE under PROGRAMMING. If no, test is complete.

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready Tools Compare Repair Quote Quote Shield Pro

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.