Skip the auto shop - Our mechanics make house calls

Q: Check engine light P0017ECT - 1998 Volvo S90

asked by on

My Check Engine light came on with the code P0017ECT - Electronic Controlled Transmission Sensor. Suddenly my battery went dead, but I got it recharged. My car still wouldn’t start after having the battery recharged, and I heard a clicking noise. When I turned the key my lights turned on, but it still didn’t start. What could be wrong? Could it be the starter, alternator or the ECT sensor? Do you have any ideas?

Hi there. There are a few different things that can cause this. Most of the time though, this is caused by an issue with the TCM or a power issue to the TCM. I usually start by testing the ignition switch and testing for power at the fuses for this circuit. If there is power to the module and this is occurring, then the module is bad. If there is no power, then it may just need a new ignition switch. Both of these are common issues. An internal transmission failure can also cause this to occur. If you need to have this looked at, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose the Check Engine Light and guide you through repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Won't start makes ticking sound someone said it could be battery or starter but all the lights come on

This is a common sign of a faulty starter solenoid. The starter solenoid is located on the starter and has internal electrical contacts that transmit electricity to the starter. When this fails, it may cause a clicking sound and will...

Q: The car idles rough and is shooting out codes p0017, p0016.

Hi, from what you’ve described and the nature of the two codes, it sounds like a timing problem. It’s possible that the timing chain has stretched, the timing chain tensioner needs to be replaced, a timing chain guide has slipped...

Q: How do I use the shifter?

Your Continuously Variable Transmission has five positions: P (Park), R (Reverse), N (Neutral), D (Drive), and L (Low). In order to move the car out of P, you will need to depress the brake pedal, and press the button on...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...