Codes p0161b, P0101 and P2188

Tiny
MARK29ER
  • MEMBER
  • 2009 MAZDA 6
  • 2.5L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 105,500 MILES
Shift points not consistent, rpm will rise and than fall slowly sometimes over a 1,000 rpm's.I will be going down the road and let off the gas no response. Rpm's come down real slow. Does not do it at idle. Will do it more often when A/C compressor cycles on. Had these codes 1,500 miles ago on 9/18/18. Clueless mechanic cleared codes. Took it to shop with excellent reputation and they did plugs coil boots, valve cover gasket, cleaned throttle body and air intake. Check engine p2188 300 miles later, but car ran alright. Cleared code. Two weeks ago light and tract. Contr. Real hard shift. Restart shifting better. Disconnected battery cleared light. Next ride light on p2009, inst. Runner cont. And actuator solenoid. Now have p0161b, p0101, p2188. Check for vacuum leaks. Cleaned mass air flow, MAP.
Tuesday, August 20th, 2019 AT 9:40 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,207 POSTS
Hello,

These are oxygen sensor codes and MAF and lean codes. The secondary o2 sensor need to be replaced. here is a guide to help walk you though with the sensor location for your car below:

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

Next is the MAF which cannot be cleaned in most cases. Here is a guide to walk you through the replacement with diagrams below to show you how on your car:

https://www.2carpros.com/articles/how-to-replace-a-mass-air-flow-sensor-maf

Once the repairs are made you will need to clear the codes.

https://youtu.be/ahK_eucFi-k

Check out the diagrams (below). Please let us know what happens.
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Thursday, August 22nd, 2019 AT 12:56 PM

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