Skip the auto shop - Our mechanics make house calls

Q: Car stalled and now won't start

asked by on

I got the Service Engine Soon warning light for the O2 sensor in bank 2. I never got around to getting it fixed and the other day my car lost power and now won't start. I am getting codes P0056, P0160, and P0402.

The first two codes point to the bank 2 sensor 2 and could be a problem with the wiring to the sensor or the catalyst is broken up and clogged the exhaust. The last code P0402 is for the EGR valve excessive flow. This can be the EGR valve is stuck open from carbon and the valve could also just be stuck open. This would cause the engine to run rough and possibly not start. I recommend you have a mechanic, like ones from YourMechanic, come by and do an overall inspection of your car’s no-start condition.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Car slow to accelerate when in drive

It appears from the description that there are multiple issues going on with your Cadillac Catera. A blown head gasket will definitely cause both acceleration issues and white smoke emitting from your tailpipe. Before we can address the possible transmission...

Q: Leaking antifreeze

The leaking coolant sounds like it is coming from the water pump in the front of the motor. With this much coolant leaking I would recommend not driving the vehicle until it is fixed. This engine is very prone to...

Q: If MAF is broken will service engine light come on? And is this my problem?

Hi, thanks for writing in. If the MAF is faulty, this will certainly cause the check engine light to come on and it can also cause lean running conditions. If you explained exactly that to the technician you are choosing...

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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...