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.
DTC P0602
DTC P0602 : PCM Programming Error
NOTE:
- Before you troubleshoot, review the general troubleshooting information .
- This DTC is indicated when the PCM update procedure is not completed.
- Do not turn the vehicle to ACCESSORY mode or OFF (LOCK) mode while updating the PCM. If you do, the PCM can be damaged.
| DTC Description | Confirmed DTC | Pending DTC | Freeze Frame |
|---|---|---|---|
| P0602 PCM Programming Error |
DTC (PGM-FI)
- Problem verification (update)
-1. Do the PCM update procedure .
-2. Check for Pending or Confirmed DTCs with the HDS.
DTC Description Confirmed DTC Pending DTC Freeze Frame P0602 PCM Programming Error DTC (PGM-FI)
Is DTC P0602 indicated?
YES
NO
Update is complete. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.
NO RELATED
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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.