Honda and Acura Module Programming Cost in Plano (2026)

Hondas have a reputation for running forever, which is exactly why so many of them end up needing a module programmed. A fifteen-year-old Accord gets a replacement engine computer from a salvage yard. A CR-V gets an under-dash fuse box replaced after a water leak. An MDX gets a transmission control unit. In each case the part bolts in, the connectors click, and the car either cranks without starting or lights the dash like a holiday display. The hardware is installed. The introduction between the new module and the rest of the car has not happened yet. For mobile Honda and Acura module programming anywhere in Plano, call or text (945) 307-3827.

Quick Answer

As of October 2026, Honda and Acura module programming in Plano typically runs $150 to $450 per module. Programming a replacement engine computer to your VIN runs $200 to $450, and marrying it to the immobilizer and your keys runs $150 to $350, often done in the same visit. A software reflash of the computer already in the car is $100 to $300. If no working key survives the module swap, expect $320 to $700 or more for the full job. The module part itself is always priced separately.

Honda and Acura Module Programming Pricing in Plano

Work	Typical Plano range (Oct 2026)	On-site time	Notes
Diagnosis before anyone condemns a module	$75 - $140	20 - 45 min	Applied to the repair if you proceed
Software reflash of the existing PCM	$100 - $300	30 - 75 min	Software issue, hardware sound
Replacement PCM programmed and configured to your VIN	$200 - $450	60 - 150 min	New, remanufactured or used engine computer
Immobilizer marriage after a PCM swap	$150 - $350	45 - 120 min	Frequently bundled with the line above
Body control or under-dash unit configuration, module supplied by you	$300 - $550	60 - 120 min	Includes immobilizer and keyless setup where the unit carries it
Transmission control unit flash and configuration	$180 - $400	45 - 120 min	Models with a separate transmission controller
Transponder key registration after module work	$120 - $230	+20 - 40 min	Turn-key Honda and Acura
Smart key registration after module work	$200 - $420	+30 - 55 min	Push-to-start Honda and Acura
All keys lost following a module swap	$320 - $700+	60 - 180 min	Key registry rebuilt from vehicle data
After-hours or weekend response	Surcharge applies	-	Confirmed on the phone before dispatch
The module itself	Quoted separately	-	New, remanufactured and used parts differ sharply

These are ranges because a Honda module job cannot be priced to the dollar without the VIN, the exact module, and a count of working keys. The sections below explain what puts a job at the bottom or the top of each line.

How Honda Ties Its Modules Together

Honda's anti-theft design is simple to describe. A transponder chip in the key is read by a receiver at the ignition, or on push-button cars by the keyless access system. The identity of each accepted key is stored, and the engine computer will not fuel the engine unless an accepted key is present. Honda calls the engine computer the ECM on some models and the PCM on others. PCM is the term when the same box also runs the automatic transmission, which it does on a large share of Hondas.

The practical consequence: the engine computer is part of the security system. Swap it and the car no longer recognizes its own keys, because the new computer has never met them. The classic symptom is an engine that cranks normally, may catch for a second, and dies, with the green key light on the dash flashing. That flashing key light is the immobilizer saying it does not recognize what it is being shown.

On turn-key Hondas, the immobilizer receiver sits around the ignition lock cylinder. On push-button Hondas and Acuras, a keyless access control unit handles the fob, and it has to agree with the engine computer as well. On many models from the 2000s and 2010s, body functions and some security functions run through an integrated control unit built into the under-dash fuse box, so a fuse box replacement can turn into a programming job that nobody quoted.

Cost by Module, Explained

Engine computer (ECM or PCM)

This is the Honda module we are called about most. Engine computers are replaced after water intrusion, after a failed jump start, after an internal driver fails and takes out an injector or coil circuit, and sometimes simply because a shop ran out of other ideas.

A replacement PCM needs two things. First, it has to carry the correct calibration for your engine, transmission and emissions package, and it has to be configured to your VIN. That is the $200 to $450 line. Second, it has to be introduced to the immobilizer and your keys so it will actually fuel the engine. That is the $150 to $350 line. The two are usually done in one session and priced together.

After the computer is in and married, most Hondas need a short learning procedure so the computer can relearn the crankshaft signal pattern and the idle. It is part of finishing the job properly. Skipping it tends to produce a rough idle or a stored fault code a week later, and a return visit nobody wants.

For the general version of this job across makes, see our guide to PCM replacement and VIN programming.

Reflash of the computer already in the car

Not every drivability complaint needs a new module. Honda has released updated software over the years for shift quality, idle behavior and emissions monitors. If the hardware is healthy and the software is behind, the computer is updated in place. That is the $100 to $300 line, and it is the cheapest outcome on this page. Our comparison of reflashing versus replacing an ECU explains how to tell which one you need before buying a part.

Body control and under-dash units

When the integrated control unit in the under-dash fuse box is replaced, or the body control module on newer models, the replacement has to be configured for your vehicle's equipment. On models where that unit carries immobilizer or keyless data, the security side has to be set up again and the keys registered. That is where the $300 to $550 range comes from. The low end is a common Civic, Accord or CR-V with all keys present. The high end is a push-button Acura with more systems reporting to the unit, or a used part that has to be cleared first.

If you are chasing a lighting, lock or accessory fault and have not bought a module yet, read our explainer on BCM programming first. A surprising number of body faults are a ground, a connector or a door harness, not the module.

Transmission control

On a large share of Hondas, including most of the traditional automatics and CVTs, the transmission is controlled by the PCM. There is no separate transmission computer to replace, and transmission-related programming is part of the PCM job.

Several newer Honda and Acura transmissions use a dedicated transmission control unit, including some of the nine-speed, ten-speed and dual-clutch applications in models such as the Pilot, Odyssey, MDX, TLX and ILX. On those, a replacement control unit has to be flashed and configured to the vehicle, and the transmission then relearns its shift adaptations. That is the $180 to $400 line.

What that price does not cover is an internal transmission failure. A worn clutch pack or a failing torque converter is mechanical. Programming cannot fix it. If you are not sure which you have, our TCM programming guide walks through how to tell a control problem from a mechanical one before paying for a module.

Keyless access control unit

On push-to-start models, a replaced keyless access unit has to be set up with the engine computer, and every smart key has to be registered again. The module configuration falls under the body-unit line in the table, and the fob registration is the $200 to $420 smart key line.

Key registration after any of the above

Whenever the security side of a Honda is touched, the keys are registered again. On turn-key cars that is $120 to $230. On push-button cars it is $200 to $420. Bring every key you own. On most Hondas, registration replaces the stored list, so a key left at home stops starting the car until it is added back. More detail is in our guide to Honda and Acura immobilizer key programming.

What Actually Changes the Price

Whether a working key is present

This is the largest swing on the page. Honda's procedure for introducing a replacement engine computer expects a key the car already accepts. With one present, the job is a controlled introduction. With none - the car arrived from auction keyless, or the keys were lost during a long repair - the key side has to be rebuilt from vehicle data before or alongside the module work. That is the $320 to $700 or more line, and it is why "how many working keys do you have?" is the first thing we ask.

If that is your situation, our page on a lost car key with no spare breaks down the key side of the bill by make.

New, remanufactured or used module

Here Honda owners get some good news. On many Honda and Acura models, a used engine computer from a matching donor vehicle can be introduced to your car's immobilizer and put into service. That is not true of every make, and it is one reason a salvage-yard PCM is a more reasonable gamble on a Honda than on many European cars.

The conditions matter. The part number has to match or be a listed supersession for your engine and transmission. A computer from a different engine, or from a manual-transmission car going into an automatic, will cause problems that no programming fixes. Some of the newest generations are also less forgiving of used parts than the older ones. Read us the part number from your original computer before you buy, and we will tell you whether the one you are looking at is a sound choice.

A remanufactured computer is typically sold ready to configure and is the middle path. A new one is the cleanest programming job and the highest part price.

Turn-key versus push-button

Turn-key Civics, Accords, CR-Vs and Fits sit at the lower end of every range. Push-button models add the keyless access system as another party that has to agree, and their keys cost more to register.

Model year and online requirements

Older Hondas are largely offline jobs. Newer generations increasingly expect current software and, on some procedures, an online session with the manufacturer's service system. That takes longer, and it is why newer model years trend toward the top of each range.

Battery condition

A programming session that loses voltage partway through can leave a module in a bad state. We connect battery support before starting any flash. If your Honda has been sitting on a lift or in a driveway for weeks with a dead module, tell us, because a deeply discharged battery needs attention before the programming starts.

Where the car is and when

Everything here is mobile work done where the car sits - a driveway in Plano, a body shop lot in Richardson, a repair bay in Allen where the shop has done the mechanical work and needs the programming finished. After-hours and weekend calls carry a surcharge, confirmed on the phone before dispatch.

Honda Versus the Makes People Compare It To

Customers often arrive with a quote for a different vehicle in mind. A few honest comparisons:

• Against Nissan. Nissan adds a security PIN step tied to the body control module, and its CVT control units carry transmission-specific calibration. Honda jobs are usually a little more predictable. Our Nissan and Infiniti module programming cost guide has those numbers.
• Against domestic trucks. Ford and GM module jobs more often require an online session and can involve more modules per job. The ranges overlap, but the time is usually longer.
• Against European makes. Many European modules are locked to the car in ways that rule out used parts entirely. Honda's tolerance for a matching used PCM is a real cost advantage.

Plano-Area Scenarios

These are the patterns we see across Collin County, described so you can recognize your own situation. They are composites, not individual customer stories.

The salvage-yard PCM that cranks and dies. An older Accord gets a used engine computer installed by its owner in a Plano garage. It cranks, catches, and stalls with the green key flashing. The part number matches, both original keys are present, and the job is the immobilizer marriage plus the relearn procedure - typically the $150 to $350 line, because the computer did not need a new calibration.

The CR-V with the wet fuse box. A sunroof drain clogs, water runs down the pillar, and the under-dash unit corrodes. A shop in Frisco replaces it, and now the door locks, the interior lights and the keyless entry behave strangely. The replacement is configured to the vehicle and the keys are registered again. Body-unit line plus key registration.

The auction Civic with no keys and a replaced computer. A small dealer near McKinney buys a Civic with a mismatched engine computer already installed and no keys. Nothing in the car agrees with anything else. This is the all-keys-lost-after-a-swap line, and it is the longest Honda job on the page.

The MDX that shifts badly after a control unit swap. A transmission shop replaces the transmission control unit on an MDX and the shifts are harsh. The unit is flashed and configured, and the adaptations are relearned. If the shifts are still wrong after that, the problem is inside the transmission, and we say so rather than programming it a second time.

What to Have Ready When You Call

• The VIN. Dash at the base of the windshield, driver's door jamb, or your insurance card.
• The part numbers. The one on the original module and the one on the replacement. A phone photo of each label is ideal.
• How many working keys you have, and whether the car is turn-key or push-button.
• What the car does now. Cranks and dies, no crank, starts and runs badly, warning lights. The symptom narrows the job before we arrive.
• Who installed the part, and whether the old module is still available. Keeping the original until the job is finished can save time, because data can sometimes be read from it.

When Module Programming Is the Wrong Purchase

A fair share of the calls we get for "module programming" are cars that do not need it. A flashing green key light with no parts replaced is far more often a key, a fob battery or the receiver at the ignition than a failed computer. A no-crank after a battery change is often a relearn, not a module. If nothing has been replaced yet, start with our guide to an immobilizer light on with no start. Diagnosis is $75 to $140 and is applied to the repair, and it is much cheaper than a computer you did not need.

Frequently Asked Questions

How much does it cost to program a Honda PCM in Plano?

As of October 2026, programming and configuring a replacement Honda or Acura engine computer to your VIN runs $200 to $450, and the immobilizer marriage that lets it start the car runs $150 to $350. The two are usually done together. The computer itself is priced separately.

Can a used Honda ECM or PCM be programmed to my car?

On many Honda and Acura models, yes, provided the part number matches your engine and transmission. The used computer is introduced to your immobilizer and keys. Some of the newest generations are less tolerant, so confirm the part number with us before buying.

Why does my Honda crank but not start after the computer was replaced?

The new computer does not recognize your keys yet. The immobilizer blocks fuel until the computer and the keys have been introduced. A flashing green key light on the dash is the usual sign. The fix is the immobilizer marriage, not another part.

Does my Honda have a separate transmission control module?

Many do not. On most traditional Honda automatics and CVTs, the PCM controls the transmission. Several newer nine-speed, ten-speed and dual-clutch models use a dedicated transmission control unit, which runs $180 to $400 to flash and configure when replaced.

Do I need to bring all my keys to a module programming appointment?

Yes. On most Hondas, registration replaces the stored key list, so any key not present will stop starting the car until it is registered again. Bringing every key avoids a second visit.

Can you program a Honda module at my house or at the shop that installed it?

Yes. The work is mobile and is done where the car sits, whether that is your driveway or the repair shop that fitted the part. We connect battery support before any flash.

What if all my keys are gone and the module was replaced?

That is the longest version of the job, at $320 to $700 or more. The key side is rebuilt from vehicle data and the module is married in the same visit. Tell us up front so we bring the right parts.

Get the Module Talking to the Car

If a Honda or Acura in Plano, Frisco, McKinney, Allen, Richardson or Garland is sitting with a new module and no start, call or text (945) 307-3827 with the VIN, the part numbers and how many working keys you have. We will tell you which line of the table you are on before we drive out.

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Written by the Plano Locksmith Automotive Locksmith Team - mobile automotive key cutting, programming and immobilizer work across Plano and Collin County.