Dealer Says “Operating as Designed,” “No Problem Found” or “Could Not Duplicate”: What It Means

When a dealer writes “operating as designed,” “no problem found” or “could not duplicate” on your repair order, it does not end your lemon law rights. Under California law, a visit where you reported the problem can still count as a repair opportunity, even if the technician did not fix anything. What matters is that you gave the manufacturer a chance to repair the car. Your job is to make sure the complaint is written on the repair order and to gather proof the problem is real.

What these phrases actually mean

Service departments use a handful of stock phrases when they do not perform a repair:

• “Could not duplicate” (CND) or “could not verify.” The technician tried to make the problem happen and did not see it during the test drive or inspection.
• “No problem found” (NPF) or “no fault found.” Scans and checks did not show a stored trouble code or failed part.
• “Operating as designed” or “normal characteristic.” The dealer, often after checking with the manufacturer, says the behavior you described is how the car is supposed to work.

None of these is a legal finding. They describe what the technician did on one day. Intermittent problems, such as a transmission that slips only when hot, a screen that freezes once a week, or a stall that happens in traffic, are often hard to reproduce in a short test drive.

Why the visit still counts

California’s lemon law requires the manufacturer to repurchase or replace a vehicle it cannot fix after a reasonable number of attempts (Civil Code section 1793.2(d)(2)). The California civil jury instructions, relying on Oregel v. American Isuzu Motors, explain that the owner’s main obligation is to give the manufacturer a reasonable opportunity to repair the car. Whether the dealer takes advantage of that opportunity, or cannot find the cause, is not the owner’s responsibility. The same authority notes that you do not have to prove the exact cause of the defect, only that the car did not conform to its warranty.

So a “could not duplicate” visit can be part of your repair history. It can also matter for your refund. In our experience, the mileage offset is measured from the first visit where you reported the problem, even if the dealer could not verify it then, once the defect is later confirmed (Civil Code section 1793.2(d)(2)(C)). An early “no problem found” visit can reduce the deduction from your refund. See how the mileage offset is calculated.

“Operating as designed” is different

“Operating as designed” is the hardest phrase to push back on, because the dealer is saying nothing is wrong. Sometimes that is true: some engines make a ticking noise, some transmissions shift firmly by design. But a design can itself be defective. If the “designed” behavior makes the car unsafe, unreliable or hard to use, it can still be a nonconformity, which California defines as a defect that substantially impairs the use, value or safety of the vehicle (Civil Code section 1793.22(e)(1)). Read what counts as a nonconformity.

Clues that “operating as designed” may not hold up include a technical service bulletin addressing the same symptom, a later recall, other owners with the same complaint, or a dealer that tried a fix before declaring the behavior normal. Check your VIN with our VIN recall check.

How to document a problem the dealer cannot find

1. Capture it on video

Video is the most persuasive evidence of an intermittent problem. Have a passenger record the warning light, the dashboard message, the noise or the shudder. Keep the original file, which stores the date and time. Never record while you are driving.

2. Keep a symptom log

Each time the problem happens, write down the date, time, mileage, speed, outside temperature, whether the engine was cold or warm, and exactly what you saw, heard or felt. Patterns help the technician and later help your case.

3. Photograph warning messages and codes

Take a picture of every warning light or message. If your car’s app shows alerts, screenshot them.

4. Write the complaint on the repair order

This is the most important step. Before you hand over the keys, make sure the service advisor writes your complaint in specific terms, for example: “Customer states vehicle hesitates and jerks when accelerating from 0 to 20 mph, happens 3 to 4 times a week, warning light on dash.” Vague notes like “check noise” are easy to dismiss later.

5. Offer to ride along or leave the car longer

Ask the technician to test drive with you so you can point out the problem. If it happens only after a long drive or overnight, ask them to keep the car long enough to see it. See the 30-day rule.

6. Get your copy and read it

California law requires the dealer to give you a copy of the work order or repair invoice for warranty service (Civil Code section 1793.1(a)). Read it before you leave. If your complaint is missing or wrong, ask for a correction. If they refuse, email the service advisor a short summary that same day so there is a dated record.

What to say at the service desk

• “Please write my complaint exactly as I describe it.”
• “I have video of the problem. Can the technician watch it and note that on the repair order?”
• “Are there any service bulletins for this symptom on my VIN?”
• “If you could not duplicate it, please write that I reported it and what tests you performed.”

Stay polite. The service advisor is not your opponent, and a cooperative relationship makes it more likely your complaint is written down accurately.

Keep going back

Do not stop bringing the car in because you were told nothing was wrong. In our experience, waiting too long is the biggest mistake owners make. Each return visit builds the record. If the dealer keeps saying nothing is wrong while the problem continues, it is time to speak with a lawyer. You can also check our step-by-step guide for when your new car keeps breaking down, or estimate a refund with the California lemon law calculator.

If the dealer keeps your car for weeks while it investigates, see what to do when the dealer is holding your car. If the visit involved a software update, read whether a software update counts as a repair attempt.

Local help

Our office is in Westwood, and we represent owners across California. In Southern California you can work with a Los Angeles lemon law attorney without leaving home.

Talk to a California lemon law attorney

If your vehicle is still under warranty and the problem keeps coming back, call 877-536-6620 for a free case review with a California lemon law attorney. You pay nothing, win or lose. We are paid only if you win, and the manufacturer pays our fees, including in settlements. If a case is lost, our firm covers the costs. We handle cases in English and Spanish.

Frequently Asked Questions

Does a "could not duplicate" visit count as a repair attempt?

It can. California courts focus on whether you gave the manufacturer a reasonable opportunity to repair the car, not whether the technician found the problem that day.

What does "operating as designed" mean on a repair order?

It means the dealer believes the behavior you reported is normal for the vehicle. That is not a legal finding, and a design that substantially impairs use, value or safety can still be a nonconformity.

How do I prove an intermittent problem?

Have a passenger record video when it happens, keep a dated symptom log, photograph warning lights and make sure every complaint is written on the repair order.

Should I keep going back if the dealer finds nothing?

Yes. Each visit where you report the problem builds your repair history, and in our experience waiting too long is the biggest mistake owners make.

What if my complaint is not on the repair order?

Ask the service advisor to correct it before you leave. If they refuse, email a short written summary of your complaint the same day and keep a copy.

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