Check Engine Light After Replacing Flat Tire - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Super Wabbit · 06-18-2023, 06:25 PM

2015 BRZ - I got a flat tire on my left rear, threw on the spare and of course the Traction, ABS, and Check Engine lights were all on. Limped to the tire shop and replaced all 4 tires with new ones. Traction and ABS lights cleared a few yards after leaving the shop but the Check Engine light is still on. The engine seems to be running normally. Is this something I can clear myself or do I need to take it some place?

Thanks!

DarkPira7e · 06-18-2023, 06:26 PM

If we don't know what it's for, we can't tell you. Go to an automotive shop and ask them to read the code. It's likely benign; can be cleared and forgotten

RZNT4R · 06-18-2023, 09:12 PM

Codes. Always start with codes. The check engine light alone can be any one of about 170 error codes.

Wally86 · 06-19-2023, 08:35 AM

Free: auto parts store OBD scan
Cheap: amazon OBD code scanner (DIY)
Not as cheap: local mechanic shop OBD scan
Not cheap a tall: dealer OBD scan

Super Wabbit · 06-19-2023, 03:42 PM

Thanks everyone, the code is a P2158 Speed Sensor B.

** Edit: The check engine light only came on after putting the spare on. I had to drive a little on the flat to get off the highway and that didn't trigger the light. So I'm wondering if this should eventually clear on its own, or if it needs to be cleared manually, or if the actual sensor is damaged.

blsfrs · 06-19-2023, 04:18 PM

Try disconnecting the battery for 30 seconds. Or buy a code reader. I have an older Subaru (in addition to my FRS) so having a code reader is mandatory.

Super Wabbit · 06-19-2023, 06:09 PM

I've got a code reader now, so it's safe enough to try erasing it and seeing if it comes back?

Grady · 06-19-2023, 08:01 PM

Clear it and be done. Also read the manual, you never put the spare on the rear of a BRZ.

humfrz · 06-22-2023, 01:36 AM

Quote:

Originally Posted by Super Wabbit

I've got a code reader now, so it's safe enough to try erasing it and seeing if it comes back?

Oh yes, just erase the code and see if it comes back.

Super Wabbit · 06-27-2023, 03:57 AM

Cleared the code, engine seemed underpowered for a few miles but then went back to normal. No bode in about 100 miles. Thanks for the help everyone.

06-18-2023, 06:25 PM	#1
Super Wabbit Member Join Date: Feb 2015 Drives: 2015 BRZ Location: Raleigh, NC Posts: 13 Thanks: 0 Thanked 5 Times in 3 Posts Mentioned: 0 Post(s)	Check Engine Light After Replacing Flat Tire 2015 BRZ - I got a flat tire on my left rear, threw on the spare and of course the Traction, ABS, and Check Engine lights were all on. Limped to the tire shop and replaced all 4 tires with new ones. Traction and ABS lights cleared a few yards after leaving the shop but the Check Engine light is still on. The engine seems to be running normally. Is this something I can clear myself or do I need to take it some place? Thanks!

06-18-2023, 06:26 PM	#2
DarkPira7e Rust bucket enthusiast Join Date: Feb 2017 Drives: 2013 Turbo Firestorm FRS Location: Vermont Posts: 4,160 Thanks: 3,447 Thanked 4,340 Times in 2,188 Posts Mentioned: 34 Post(s)	If we don't know what it's for, we can't tell you. Go to an automotive shop and ask them to read the code. It's likely benign; can be cleared and forgotten __________________ Turbo FR-S Build - Build Thread JDL EL Recirc manifold, Boostlab BL58x Turbo w/ T51R, 17x9 ARC-8, IAG block

06-19-2023, 08:35 AM	#4
Wally86 Be Kind Join Date: Apr 2020 Drives: 2020 86 Location: MD Posts: 1,153 Thanks: 5,748 Thanked 1,342 Times in 648 Posts Mentioned: 7 Post(s)	Free: auto parts store OBD scan Cheap: amazon OBD code scanner (DIY) Not as cheap: local mechanic shop OBD scan Not cheap a tall: dealer OBD scan __________________ [Insert clever signature here] IG \| WhiskyBlog \| Photography

06-19-2023, 03:42 PM	#5
Super Wabbit Member Join Date: Feb 2015 Drives: 2015 BRZ Location: Raleigh, NC Posts: 13 Thanks: 0 Thanked 5 Times in 3 Posts Mentioned: 0 Post(s)	Thanks everyone, the code is a P2158 Speed Sensor B. ** Edit: The check engine light only came on after putting the spare on. I had to drive a little on the flat to get off the highway and that didn't trigger the light. So I'm wondering if this should eventually clear on its own, or if it needs to be cleared manually, or if the actual sensor is damaged. Last edited by Super Wabbit; 06-19-2023 at 03:55 PM.

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06-18-2023, 09:12 PM	#3
RZNT4R Professional Mechanic Join Date: Apr 2010 Drives: 2017 86 6MT Oceanic Location: Quebec, Canada Posts: 789 Thanks: 17 Thanked 634 Times in 371 Posts Mentioned: 12 Post(s)	Codes. Always start with codes. The check engine light alone can be any one of about 170 error codes.

06-19-2023, 04:18 PM	#6
blsfrs Senior Member Join Date: Dec 2018 Drives: 2013 frs base Location: central Virginia Posts: 1,469 Thanks: 2,801 Thanked 1,486 Times in 702 Posts Mentioned: 13 Post(s)	Try disconnecting the battery for 30 seconds. Or buy a code reader. I have an older Subaru (in addition to my FRS) so having a code reader is mandatory.

06-19-2023, 06:09 PM	#7
Super Wabbit Member Join Date: Feb 2015 Drives: 2015 BRZ Location: Raleigh, NC Posts: 13 Thanks: 0 Thanked 5 Times in 3 Posts Mentioned: 0 Post(s)	I've got a code reader now, so it's safe enough to try erasing it and seeing if it comes back?

06-19-2023, 08:01 PM	#8
Grady Senior Member Join Date: Jun 2017 Drives: BRZ Yellow, Ranger, Evora, WCM S2K Location: Dallas Posts: 1,712 Thanks: 354 Thanked 1,500 Times in 786 Posts Mentioned: 14 Post(s)	Clear it and be done. Also read the manual, you never put the spare on the rear of a BRZ.

06-27-2023, 03:57 AM	#10
Super Wabbit Member Join Date: Feb 2015 Drives: 2015 BRZ Location: Raleigh, NC Posts: 13 Thanks: 0 Thanked 5 Times in 3 Posts Mentioned: 0 Post(s)	Cleared the code, engine seemed underpowered for a few miles but then went back to normal. No bode in about 100 miles. Thanks for the help everyone.

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