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JOHN aka Eauto
JOHN aka Eauto, The Car Guy
Category: Nissan
Satisfied Customers: 15076
Experience:  ase tech over 15 years in the field uaw union member
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When I start the car the parking gear keeps on blinking and

Customer Question

When I start the car the parking gear keeps on blinking and the check engine light is on. I've tried everything to try and resolve the problem, but the check engine light remains on
JA: Does the light stay on, or does it blink? What is the model/year of your Nissan?
Customer: It blinks for a while then stops. It is a 2002 Nissan Altima
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: I took it to the mechanic, and he changed the plugs, the ignition coils etc but he light never goes away
JA: Anything else you think the mechanic should know?
Customer: I also want to know what the blinking parking gear light means
Submitted: 3 months ago.
Category: Nissan
Expert:  JOHN aka Eauto replied 3 months ago.

do you know the codes?

Customer: replied 3 months ago.
Yeah I got the codes checked and changed everything it said. The codes were
P0740: solenoid circuit malfunction
P0327: knock sensor circuit low input
P0420: catalyst efficiency below normal
Customer: replied 3 months ago.
No I can't talk on the phone
Expert:  JOHN aka Eauto replied 3 months ago.

did he change the solenoids in the transmission? did he change the catylitic converter and the knock sensor?

Customer: replied 3 months ago.
he's chaged all that
Expert:  JOHN aka Eauto replied 3 months ago.

did he install a carb complent converter?

Customer: replied 3 months ago.
do you know any other probable causes?
Expert:  JOHN aka Eauto replied 3 months ago.

do you have a copy of the repair bill with part numbers?

Expert:  JOHN aka Eauto replied 3 months ago.

usually cheap after market converters will cause a po420 code did he replace the upper or lower?

Customer: replied 3 months ago.
No unfortunately I don't. I bought the parts myself and provided them for the repairs
Expert:  JOHN aka Eauto replied 3 months ago.

did you buy them all from nissan or a discount parts store?

Customer: replied 3 months ago.
aside from the check engine light, can you tell me why the parking gear is blinking?
Expert:  JOHN aka Eauto replied 3 months ago.

well what did your mechanic change in the transmission if anything?

Customer: replied 3 months ago.
He didn't change anything in the transmission
Expert:  JOHN aka Eauto replied 3 months ago.

well you have shift solenoid codes so the transmission needs to be diagnosed..it may be a shift solenoid or a failed valve body...teardown and trouble shooting is required

Expert:  JOHN aka Eauto replied 3 months ago.

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