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P0602

Engine Computer — Not Programmed

High — fix right awayDo not drive

Severity: Fix right away. Driving risks expensive damage or a breakdown.

What P0602 means

The engine computer has no software loaded or the wrong software, which usually happens after a computer replacement that was never programmed.

Common causes

How to fix it

The computer needs the correct software flashed by a dealer or a shop with programming tools.

Can I drive with P0602?

The car may not start or run correctly until the computer is programmed.

Related codes

Questions, answered

Is it safe to drive with code P0602?

Avoid driving until it is checked — towing is the safer choice. The car may not start or run correctly until the computer is programmed.

What causes code P0602?

The most common causes are: New computer never programmed; Wrong software flashed; Failed programming attempt. A scan tool and a visual check of the parts above is where a technician starts.

How do I fix code P0602?

The computer needs the correct software flashed by a dealer or a shop with programming tools.

Not repair advice. This page gives general information about code P0602 only. Cars differ by make, model and year — confirm the fault with a scan tool and have the repair done by a qualified technician.

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