Q: Why car won't start help. Tried to help with obd.

asked by on February 11, 2017

egr flow insufficient, evap emission system purge cvault, crank shaft position sensor a circuit malfunction, random cylinder misfire
My car has an automatic transmission.

Among the possible faults that you have listed, the crankshaft position sensor (CPS) is particularly noteworthy. If the CPS has indeed failed such is a very common cause of no starts. Consequently, your most efficient option would be to request a check engine light diagnostic. During that diagnostic, a certified mechanic from YourMechanic would test the CPS to determine if the sensor itself (as opposed to the external sensor wiring or terminal connection) is in fact not working. If the CPS is faulty the mechanic will replace it. Once the engine is running, the other engine faults that you are reporting would be diagnosed, and repaired, in turn. If you have further questions or concerns, do not hesitate to re-contact YourMechanic as we are always here to help you.

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Glove compartment won't unlock
Hi! This issue is a common problem many TSX owners encounter. So common that the Acura dealerships began replacing the glove boxes under warranty claims. The warranty for the glove box replacement will extend up to 50,000 miles. The glove...
Belt, pump, and gauge problems
Hello! There is likely an issue wth the oil pressure sensor causing the flashing Oil Light. I suggest having a technician test the sensor by the use of a multimeter. Also, be sure to have the oil level checked; a...
Truck will turn over but won't start
There can be several reasons why your vehicle will not start and quite a few of these reasons can duplicate a lack of fuel. The first thing to check is the fuses and relays for the fuel pump circuit. When...
Sparkplug wires melting in sparkplug socket.
From what you've described, the cylinder head overheated which caused the wires to melt. Your engine is overheating and the white smoke from the exhaust (https://www.yourmechanic.com/services/smoke-from-engine-or-exhaust-inspection) indicates that the head gasket is blown or cracked. You should have the car...
Wouldn't start, just cranks. It's been happening since front end was damaged. Everything was fixed from the accident, what could it be?
Hi there. Check the airbag sensor in the front end of the vehicle. Since the airbag deployed when you hit a deer, the airbag sensor had to be compressed to make this occur. Make sure that the battery is disconnected...
Motor has a tapping sound at idle, gets louder as you rev higher.
A light tapping noise from the engine may be caused by a low oil level as there isn't enough oil flowing through the engine. Louder clacking and knocking noises that sound like they are coming from the lower end of...
I own a 2014 Chevrolet Captiva about 8 to 10 times a day the key will not come out of the ignition I have had the shifter linkage
The entire shift mechanism should be looked at. The shifter mechanism may be worn or bent if "adjustment" helped temporarily. Also the ignition switch may not be signaling the shifter inter-lock mechanism. Also, if the inter-lock mechanism is loose, out...
Slight vibration and a humming noise coming from steering column and the front wheels
Based on the symptoms you are describing, you may have a wheel bearing that has developed some free play and may also have dried out. This can cause both a vibration and a humming noise. If you have altered the...
i heard yo mu had to replace the wheel hub if the wheel bering damages is tht true
If wheel bearing is in need of replacement on this vehicle then you will need to replace the entire hub assembly with it since it comes as an assembly incorporated with the speed sensor.

Related articles

P0270 OBD-II Trouble Code: Cylinder 4 Injector Circuit Low
P0270 P0270 code definition Cylinder 4 Injector Circuit Low What the P0270 code means This diagnostic trouble code (https://www.yourmechanic.com/article/what-is-the-on-board-diagnostics-obd-system) indicates that the powertrain control module (https://www.yourmechanic.com/article/what-is-a-vehicle-s-electrical-control-unit) has detected a lower reference voltage from the fuel injector on the number 4...
P2553 OBD-II Trouble Code: Throttle/Fuel Inhibit Circuit Range/Performance
P2553 P2553 code definition The P2553 OBD-II fault code means the Engine Control Module (ECM) has detected an issue with the the throttle or fuel inhibitor circuit, causing a voltage reading more than 10 percent outside of accepted parameters to...
P2308 OBD-II Trouble Code: Ignition Coil C Secondary Circuit
P2308 P2308 code definition The P2308 diagnostic trouble code is an indication that there is an issue with the ignition coil C secondary circuit. Related Trouble Codes: P2300 OBD-II Trouble Code: Ignition Coil A Primary Control Circuit Low P2301 OBD-II...