Skip the auto shop - Our mechanics make house calls

Q: Check Engine Light is on - code P0350

asked by on

Have got a code through diagnostic p0350. Have changed all spark plugs and coils. But still keep getting the engine light. Now when I start the car the engine Ravs sits on 3 and drops to 1.5 after a minute. Also have exchanged a ECM from another same model car, cleared the code. But the light came back on.

Please help. Car is Nissan Serena 2007. CVT engine. C25 model
My car has an automatic transmission.

A: Hi there. Changing the plugs and coils is d...

Hi there. Changing the plugs and coils is definitely a plausible route to take; however, this sounds like you have an open circuit in the wire harness, anywhere from the coils to the ECM.

Using a digital volt/ohm meter and the wiring diagram for your vehicle, locate the wires that connect the coil signals to the ECM and measure the continuity (measure the resistance in ohms) of the wire. A wire that measures OL or out of range is the open circuit setting your code. Locate the break, repair it, and then clear the codes. Start the engine, and recheck for pending or stored codes.

YourMechanic has several available technicians that can assist you with a Check Engine Light inspection and can look into the code you are getting.

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・Save up to 30%

Get a quote

What others are asking

Q: Jeep cranking, but not starting.

It sounds like your battery doesn't have enough charge and the alternator is working full load to charge it. But really, it's loading the engine to the point of it stalling. I would charge the battery on a trickle charge...

Q: What does the low fuel warning Light mean?

The low fuel Warning Light is located on the instrument panel, and illuminates when your vehicle is running low on gas. When this light comes on, refuel your vehicle as soon as is safely possible, at which point the light...

Q: My actual handle isn't broken. It's Just won't open

The door handle inside a vehicle of your year and model uses a mechanical linkage to transfer the force applied to the handle then to a device that unlatches the door at the jamb. The linkage inside the door may...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...