B-Swap Code Help!

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Old Jul 10, 2021 | 06:16 AM
  #1  
Lejus's Avatar
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From: DC
Default B-Swap Code Help!

B20B - P75 ECU
LS Trans.

It sounds off, I can add a video but I checked the codes and I believe I got the following

9, 10, 41 and 65

I believe. Anyone have a general idea how to fix these issues, they kind or seem related
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Old Jul 12, 2021 | 08:36 AM
  #2  
TacoCat's Avatar
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Default Re: B-Swap Code Help!

The codes you reference are:

Code 9 - No.1 cylinder position sensor
Code 10 -Intake air temperature sensor
Code 41 - Heated oxygen sensor heater
Code 65 - Rear heated oxygen sensor heater

For code 9, this is generally a problem with the distributer but could be caused by many different issues. The code means it the ECU didn't receive a signal from the crank position sensor, which is located within the distributer. I would start by checking the timing first just to make sure the distributer isn't way out of time. The easy thing to do is to replace the distributer but this isn't cheep and many "new" OBD1 distributers are junk from the start. You probably want to go through the harness and any jumpers you have and verify the distributer is properly connected and there are no loose wires before looking at the distributer.
For code 10, check or replace the IAT sensor and verify the wiring.
For code 41 and 65, you probably don't have the relays in place to provide voltage needed to heat the 4 wire O2 sensors.
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