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Jay, Certified Infiniti Technician
Category: Infiniti
Satisfied Customers: 3943
Experience:  20+years, Nissan and Infiniti experience and currently now working for a Infiniti Dealer
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2003, service engine soon light, codes p0720 and p1574,

Customer Question

JA: What are all the symptoms you've noticed (e.g. noises, leaks, flashing lights, error codes)?
Customer: service engine soon light
JA: Do you have the trouble code? Do you have a code reader or scan tool?
Customer: codes p0720 and p1574
JA: I'll pass this info along to the Infiniti Mechanic so that he can get you a quick fix. Are you fixing your vehicle yourself? What have you tried so far?
Customer: havent adressed it yet
JA: Anything else you want the mechanic to know before I connect you?
Customer: not really, Im wondering how safe it will be on a longish trip it was slipping in traffic once
Submitted: 1 year ago.
Category: Infiniti
Customer: replied 1 year ago.
What does this typically cost to fix? Do I have to use a dealer?
Expert:  Jay replied 1 year ago.

Hello my name is ***** ***** thank you for your question.

What model Infiniti is this?

Customer: replied 1 year ago.
2003 i35
Expert:  Jay replied 1 year ago.

Thank you.

The code P0720 is for the Revolution Sensor on the transmission. This sensor can cause the Cruise control not to work properly and cause the P1574 code. So you want to focus on the revolution sensor on the transmission. Diagnostics to verify it's the sensor starts at around 1 hour labor. Then the cost of the sensor which is around 90 bucks and 1/2 hour labor.

Do you have any more questions on this?