How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Derek Werner Your Own Question
Derek Werner
Derek Werner, Chevy Technician
Category: Chevy
Satisfied Customers: 137
Experience:  ASE Master Technician, L1 Advanced level specialist
Type Your Chevy Question Here...
Derek Werner is online now
A new question is answered every 9 seconds

Have codes p11c3, poo97, poo99, p11c4, p2199, poo96 on a

Customer Question

have codes p11c3, poo97, poo99, p11c4, p2199, poo96 on a chevy 2013 impala 3.6 non flex fuel, replaced mass airflow sensor, cleared all codes, stated it up ck engine light came back on... but if you clear codes with engine running the light will stay off until you shut it off and restart it
Submitted: 1 year ago.
Category: Chevy
Expert:  Derek Werner replied 1 year ago.

Hello and thanks for using JustAnswer!

My name is ***** ***** am a ASE certified master technician and will be happy to help you with your Impala. What fault codes returned after replacing the MAF, and clearing all the codes? Thanks
Customer: replied 1 year ago.
p0099, p11c4, p11c3, p2199, p0097
Customer: replied 1 year ago.
the car runs as always, plenty of power, it does have a k and n filter in it, been in it for 40,000 miles, thougt that might be the trouble, removed it, made no difference codes still came back
Expert:  Derek Werner replied 1 year ago.

Thanks all of the fault codes are related to the mass air flow sensor.

Did you install a factory part from GM?

Some Aftermerket parts have been known to fail even when new.

I would inspect the mass air flow sensor wiring for any visual damage.

Also check the EMIS 2 fuse 15amp in the fuse block under the hood. This fuse powers the maf.

Check for a good ground on black wire with a white stripe at pin 7.

Customer: replied 1 year ago.
it is a factory new, ac delco, part
Expert:  Derek Werner replied 1 year ago.

Awesome, i would check the fuse first.

Customer: replied 1 year ago.
checked all fuses under the hood, all good, checked the plug and related wireing, all appear to be fine, light is still on
Expert:  Derek Werner replied 1 year ago.

ok next you will need a test light or multimeter to check for power and ground at the maf sensor connector.

pin 5 should have battery voltage. pink/ black

pin 7 is ground. black/white wire.

Customer: replied 1 year ago.
took the car on a road trip over the weekend, put on about 550 miles, light is out, no stored codes, funs great, how do I go about getting a refund as you suggestions on how to repair it did not solve the problem, thanks
Expert:  Derek Werner replied 1 year ago.

What ended up fixing the problem?

I will submit this to customer service.