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Check engine light & diagnostics

Check Engine Light Diagnostics in Catonsville, MD

Check engine light on? At Taha Auto Services on Cummings Ave in Catonsville, the code is where the diagnosis starts, not where it ends. We find the actual cause, tell you what needs fixing now and what can wait, and give you one flat price for the repair before any work starts. The diagnostic is $50, and it's free when we do the repair.

$50Diagnostic on daily drivers
FreeThe diagnostic, when we do the repair
Walk-insWelcome, or book a time online
Flat-rateRepair price, quoted before work starts

Steady or flashing?

What the light is doing tells you how soon to come in:

  • Steady, and the car drives normally. A fault has been stored. Book a diagnostic soon: small faults left alone can turn into bigger repairs.
  • Flashing. The engine is misfiring badly enough to damage the catalytic converter. Drive gently, skip hard acceleration, and call the shop.
  • On, with rough running, stalling, or a smell of fuel. Keep the drive short and call before you come in.
  • On right after filling up. Check the gas cap is tight; a loose cap is a common cause. If the light stays on after a few drives, book a diagnostic.

How we diagnose

Every make
  • Read the stored codes
  • Test the system the code points to
  • Find the failed part first
  • What's urgent, what can wait
  • One flat price for the fix
Diagnostic $50Free when we do the repair

How booking a diagnostic works

No account and no payment to book. Pick a time online or call, and we confirm it.

  1. Book online or call. Pick a day and time on the booking form, which shows the shop's next openings, or call .
  2. We confirm the time and the price. We call or text to confirm, with one flat price before any work starts.
  3. Drop the car off. At , at your booked time.
  4. We call when it's done. The price we quoted is the price you pay.

Price

The diagnostic is $50, and it's free when we do the repair.

The repair gets one flat price before any work starts. The price we quote is the price you pay.

When it's ready

We tell you what we found and what it costs before any repair starts.

If parts are needed, you get the repair price before we start, and we call when the car is ready.

Any make

Domestic and foreign, every make and model, from Toyota and Honda to BMW and Mercedes-Benz.

Brakes making noise instead? See brake repair.

The actual cause, at a price agreed up front.

Clearing the code and hoping is not a fix. Two customers, in their own words, from our Google reviews:

“Tony is amazing. He works on not just domestic vehicles but foreign as well. I took my vehicle to multiple shops and they weren't able to resolve a starting issue with my G37. Tony was able to diagnose it properly and fixed it within two days. Definitely recommend!”

Jay Razvi on Google

“Some of the big name shops couldn't find what was wrong with my car until someone recommended me here. The work was done in no time, the price was great for the work I got done. I would recommend this auto shop to anyone!”

Rafeay Sarfraz on Google

Read more customer reviews

Common questions

How much does a check engine light diagnostic cost?

$50, and it is free when we do the repair.

Can I keep driving with the check engine light on?

If the light is steady and the car drives normally, book a diagnostic soon. If it is flashing, the engine is misfiring: drive gently and call the shop before going far.

Will clearing the code fix the problem?

No. Clearing a code turns the light off until the fault comes back. We find the cause and quote the fix before any work starts.

Do you diagnose European and import cars?

Yes, every make and model. For European, luxury, truck and performance cars, the repair is quoted on your exact model before any work starts.

Where to bring the car

Phone
Hours

Book a check engine light diagnostic

Pick a day and time online, or call the shop. Also at Taha Auto: Maryland State Inspection, brake repair, oil changes and AC & heating repair.

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