A faulty transmission control module (TCM) most often causes limp mode with the gearbox stuck in one gear, harsh jolts when you select D or R, erratic gear changes, flashing PRND letters and a gearbox or engine warning light. However, the same symptoms are often caused by a low gearbox oil level, a weak battery, a poor earth or a faulty sensor. To test a transmission control module, start by checking the battery and reading the fault codes with a diagnostic tool that can talk to the gearbox control unit, then check the power supply, the connector, the oil and the live data. Below we explain the symptoms, the diagnostic steps and what the most common fault codes mean.
Engine control unit Ford Motorcraft 85GB12A297CB
Vendors's code: 85GB-12A297-CB
Product code: 85GB12A297CB
Barcode:
Code 39:
ISBN:
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Price 30 euros applies shipments to 5 kg on worldwide. Above this weight, please contact us by email to check price
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Is engine control unit 85GB12A297CB a used original part?
Used Ford engine control unit with number 85GB12A297CB. Send us the numbers from the label on your control unit.
Is engine control unit 85GB12A297CB the right part for your Ford?
Control unit 85GB12A297CB is a used original engine computer. It has been inspected before sale, and below you will find the complete list of numbers from the listing. The listing does not state the car model or year, so we do not give them in the description and match the part by its numbers.
Where to find the numbers on an engine control unit
You will find the numbers on the label of the control unit, while catalogues list them as a single string:
- 85GB12A297CB, car manufacturer's original number.
The ending of a number often indicates a different version of the control unit, so compare every character. If you are in doubt, write to us before buying.
Control unit variant
This listing is for a control unit in the following variant(s): Locked. We describe the differences between the variants (locked, unlocked, Virgin, IMMO OFF, Plug and Play, clone, full set) on the ECU preparation options page. Before buying, send us the numbers from the label and we will confirm which variant is available for that number.
What can point to an engine control unit failure
- the engine will not start although the starter motor works and there is fuel,
- the radiator fan or other electrical components do not work properly,
- the housing or connector of the control unit shows signs of water ingress or corrosion,
- the engine no longer runs properly after the battery has gone flat.
Before buying a control unit, read the fault codes with a diagnostic tester and check the power supply, the earth connections and the connector. Damaged sensors, wiring or fuses can cause similar symptoms, and in that case replacing the control unit will not help.
Questions and answers
| Who makes this control unit? |
|---|
| The control unit is made by Motorcraft. The manufacturer's name does not change the numbers you should use to match the part. |
| What should I do if the ending of my number is different? |
| The ending of a number often indicates a different version of the control unit, so do not order the part without confirmation. Send us the number from the label on your control unit. |
| Is this an original control unit? |
| Yes, it is a used original engine control unit, not an aftermarket replacement. You can compare the numbers on the label with the original in your car. |
| Is this a new part? |
| No. We sell used original control units, each one inspected before sale. You will find the warranty period in the product features table. |
Want to be certain? Send us the numbers from the housing of your control unit, and together we will check whether this part will fit.