Large tires messing up computer system

10

Asked by Apr 29, 2016 at 09:16 PM about the Chevrolet Silverado 1500

Question type: Maintenance & Repair

C0237- Rear sensor erratic
C0226- Left speed signal missing
C0222- Right "
C0238- wheel mismatch
P0507- Idle air control system/revolutions per minute higher than normal

Took my 98 silverado into JiffyLube due to check engine light coming on. The
told me that due to the size of my tires that my computer is going crazy and
these codes popped as you can see above. I was just wondering are the
necessary steps to get this issue resolve and idea on cost.

5 Answers

6,485

a OBD-II has a 'RESET your codes" button, but whatever caused that problem will show up again...SO first get the correct size as indicated on your door jamb...BIG tires will throw the speedometer off and the engineering is set to the harmonics of the prescribed size....these scanners are cheap perhaps 30 bucks~

10

It's a lifted truck so would the speedometer have to be calibrated for the size of the tires

1 people found this helpful.
1,880

I could be wrong but i can't see the computer is reading anything bout tire size. These computers is when they just starting out & not as all knowing. If all tires the same size, etc. I would look into another cause. Why does it say mismatch, r tires the same? Could a sensor be going nuts?

1 people found this helpful.
15,245

Large tires are not causing any of the codes. Jiffy lubes kinda funny! cost would be from $125 -$800

1 people found this helpful.
83,715

Need same size tires all around, big or small, then just get the speedometer calibrated to the tire size. If you have different tire sizes on the 4 corners, the wheel sensors will pick it up and throw a code, since the tires are different diameters thus the computer via the wheel sensor. Also this f**ks up the front and rear differentials.

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