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Codes B1010 and P0340?

Tiny
ANDRIN ATEM
  • MEMBER
  • 2015 HYUNDAI SANTA FE
  • 3.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 100,865 MILES
I got two codes on my vehicle; I do not know which might be causing the hard start. B1010 and P0340 comes as pending. Please help me out on things to verify and diagrams for pin outs and can bus.
Monday, September 23rd, 2024 AT 11:01 AM

6 Replies

Tiny
ANDRIN ATEM
  • MEMBER
  • 250 POSTS
  • 2015 HYUNDAI SANTA FE
  • 3.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 1,000,865 MILES
My vehicle has difficulty in starting most times, sometimes it starts with no issues, but one code keeps popping after the sensor has been replaced swapped and the problem still stays in the same bank 1. KM8SM4HF9FU108272 G3. 3GDI 2015 USA Model. P0340
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Monday, September 23rd, 2024 AT 11:21 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,526 POSTS
The first thing is the ECU issue, the code says it is bad but I have had good luck having the ECU reflashed. A shop will need to do this for you or you can get get a preprogrammed unit by searching Google or Ebay.

B1010 Code - ECU Malfunction
P0340 Code - Camshaft Position Sensor 'A' Circuit Malfunction

Here is the location of the ECU so you can swap it out, also I would remove the electrical connectors and plug them back in to help fix a potential bad connection, check for corrosion as well. Check out the images (below). Please let us know what happens.
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Monday, September 23rd, 2024 AT 12:34 PM
Tiny
ANDRIN ATEM
  • MEMBER
  • 250 POSTS
I swapped the ECU, the problem remains the same. Please the 3 wire camshaft sensor signals will help if I can know what voltages and signals I am supposed to get.
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Monday, September 23rd, 2024 AT 3:28 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,526 POSTS
https://www.2carpros.com/questions/trimming Please go over your other post.
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Tuesday, September 24th, 2024 AT 12:30 PM
Tiny
ANDRIN ATEM
  • MEMBER
  • 250 POSTS
Hi Ken, thank you very much. From your wiring diagrams of the sensors, I was able to realize ground was not coming on all 4 sensors, so I just created my own ground and that took care of the problem. Thank you very much for your constant assistance.
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Wednesday, September 25th, 2024 AT 12:44 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,526 POSTS
Glad you could get it fixed, thanks for letting us know. Please use 2CarPros anytime we are here to help.
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Thursday, September 26th, 2024 AT 11:25 AM

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