Kia Troubleshooting Questions? Ask a Mechanic
It's hard to say, but based on those codes it sounds like either the vehicle is off time (the timing belt wasn't replace correctly) or it needs a new cam or crank position sensor (or both sensors). My money is on the crank position sensor being bad-that would cause the stall and not restart condition you describe.
It probably also needs a throttle position sensor based on the 700 and 717 codes.
Does the owner report that it ran fine up until recently or has it been running poorly ever since the timing belt?
I'd say you could probably just change the crank sensor and have a decent running vehicle in that case. The trouble is, the crank sensor is inside the timing chain cover. It's not the hardest thing in the world to change, but it will take about 2 hours of labor or so.
To test it, when the vehicle stalls out, check for cranking RPM data on a scan tool. If you can't see RPM data while cranking then you know the crank sensor is acting up.
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