Getting DTC codes P0016, P0107, P0641 and P0068 after putting in a new engine

Tiny
ONYEZ
  • MEMBER
  • 2011 CHEVROLET MALIBU
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 88,800 MILES
Changed the engine in my car because the previous one had no compression in any of the cylinders and there was metal particles in it causing the car to not start. Put in this used engine now the cars throwing off DTC codes that refused to clear even if I take the battery off for hours and it is also displaying reduced engine power, service esc, service traction constantly. The traction icon on the dash board is on permanently. The DTC codes are: P0016, P0107, P0641 and P0068. I will also attach a picture below.
Wednesday, March 28th, 2018 AT 1:05 PM

3 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,881 POSTS
P0016 - Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
P0068 MAP/MAF - Throttle Position Correlation
P0107 - Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
P0641 Sensor Reference Voltage A Circuit Open

The last thing you want to do is disconnect the battery. That can erase a fault code, but that doesn't fix the problem that set the code. It also erases all the other learned data, and you lose the valuable information stated in the fault codes. The fact the codes set again right away is proof the Engine Computer is detecting these problems. With over 2,000 things it can detect, you need those fault codes to know where to start looking.

Given the nature of the recent service, the best suspect is damaged wiring. First look for wiring harnesses that are draped over the sharp edge of a metal bracket and may have rubbed through to the point a wire is cut or is grounding out. What happens to one wire will also happen to others next to it. Next, look for connector terminals that had corrosion between them, and that got disturbed when they were disconnected to replace the engine. Simply disconnecting and reconnecting a plug can make an electrical problem show up now that was about to occur on its own very soon.

Codes 68 and 107 are almost certainly related. Watch the throttle position sensor's readings on the scanner as you push the accelerator pedal from idle to wide-open-throttle. You should see the signal voltage rise smoothly from approximately 0.5 volts to around 4.5 volts.

Watch the MAP sensor's reading to see what it is with the ignition switch on, engine not running, and what it changes to when the engine is running. Let me know what you find.
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Thursday, March 29th, 2018 AT 2:41 PM
Tiny
ONYEZ
  • MEMBER
  • 3 POSTS
Thanks for the reply, the cars back at the shop and i'll keep you posted on what they find
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Thursday, March 29th, 2018 AT 3:05 PM
Tiny
CARADIODOC
  • MECHANIC
  • 33,881 POSTS
Wonderful. Always looking for things to add to our memory banks.
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Thursday, March 29th, 2018 AT 5:42 PM

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