Codes, what does signal b mean

1992 HONDA ACCORD
240,050 MILES • 1.5L • 2WD • AUTOMATIC
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KARL GRAVES
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  • 7 POSTS
When I do the self diagnostic it comes up code three one which is a/tf1 or l signal b. what does signal b mean?
Aug 17, 2020 at 12:47 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good morning,

The code is for the throttle position sensor. The signal is not being seen at the ECM.

I attached the flow chart and the description for you.

In most cases, it is the sensor itself.

Roy
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Aug 17, 2020 at 1:15 AM
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KARL GRAVES
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  • 7 POSTS
Thanks Roy, you are the only one who had answered most said by shifter. thanks again.
Aug 17, 2020 at 3:35 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
You are welcome.

Always glad to help.

Roy
Aug 17, 2020 at 3:37 AM
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