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Code P0302 with VSA activation indicator lamp and Malfunction indicator lamp turned on?

Tiny
XJSHEN
  • MEMBER
  • 2009 HONDA ACCORD
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 159,500 MILES
On my car listed above VSA lamp with triangle VSA activation indicator lamp and Malfunction indicator lamp turned on at dashboard. Two p0302 codes with cylinder 2 misfire detected on IBDII detector.

symptoms:
During acceleration, the car hesitates if RPM increased to 60 mph. Was car could not accelerate more than 60 mph, and with hesitate.
I ordered a VSA switch. Now even at low mph car hesitates.
I replaced cylinder 2 spark plug, replaced engine oil filter.

Thanks for your instructions and helps!
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Thursday, September 26th, 2024 AT 4:25 PM

7 Replies

Tiny
XJSHEN
  • MEMBER
  • 218 POSTS
On IBDII scanner this value may be problematic: ST FTRM12 (%) -7 ; A minus value on my car? (Honda Accord 2009)
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Friday, September 27th, 2024 AT 2:32 AM
Tiny
XJSHEN
  • MEMBER
  • 218 POSTS
Here is record copy.
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Friday, September 27th, 2024 AT 3:24 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
I would worry about the P0302 code first, which is a misfire code for cylinder number 2. remove the spark plug and replace it along with the ignition coil which should fix it.

Here is a guide to help with more information:

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

This guide should help as well:

https://www.2carpros.com/articles/how-to-change-spark-plugs

Clear the codes once the repair is completed. Check out the images (below). Please upload pictures or videos in your response of any problems so we can see what to help you with.

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Friday, September 27th, 2024 AT 12:00 PM
Tiny
XJSHEN
  • MEMBER
  • 218 POSTS
  • 2009 HONDA ACCORD
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 159,500 MILES
On my 2009 Honda Accord VSA lamp with triangle VSA activation indicator lamp and Malfunction indicator lamp turned on at dashboard. Two p0302 codes with cylinder 2 misfire detected on IBDII detector.

On IBDII scanner : ST FTRM12 (%) -7 ; A minus value on my car (Honda accord 2009)

Symptoms:
During acceleration, the car hesitates if RPM increased to 60 mph. Was car could not accelerate more than 60 mph, and with hesitate.

I ordered a VSA switch. Now even at low mph car hesitates.
I replaced cylinder 2 spark plug, replaced engine oil filter.

Thanks for your instructions and helps!
Was this
answer
helpful?
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Friday, September 27th, 2024 AT 1:14 PM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
A negative fuel trim indicates that the engine control module (ECM) is reducing the amount of fuel being injected because the engine is running rich. What did the number #2 spark plug look like was it black? If so, you could have low compression, or the fuel injector is stuck open. Use this guide to help check the compression:

https://www.2carpros.com/articles/how-to-test-engine-compression

Please go over this guide and get back to us.
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+1
Saturday, September 28th, 2024 AT 10:24 AM
Tiny
XJSHEN
  • MEMBER
  • 218 POSTS
Hi Ken,

Thank you so much for your precious instruction. I tested VSA switch was bad, and No. 2 spark switches also did not have resistances. And ordered them through eBay, but first round shaping from sellers who deal with Japanese parts, was all sent wrong sized parts, and did not replace with normal parts, and spark plugs included two of four defected plugs without resistances. I had to order new from different seller that took me 15 days to fix my car. Yesterday I eventually cleared the code and run drive cycles, and my car is running normal now. Again thanks!
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Monday, October 21st, 2024 AT 7:31 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 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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Monday, October 21st, 2024 AT 9:51 AM

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