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 Honda Civic 37820-P04-G02 37820P04G02
Vendors's code: 37820P04G02
Product code: 37820-P04-G02
Barcode:
Code 39:
ISBN:
325,20 zł
Price
325,20 zł
400,00 zł
Price
400,00 zł
Ask about the product
Engine control unit Honda Civic 37820-P04-G02 37820P04G02
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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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37820-P04-G02 engine ECU for your Honda Civic – how to check the fit
We offer a used, working engine control unit with part numbers 37820-P04-G02 and 37820P04G02. It fits if the same numbers appear on the label of the ECU in your car. Ask us about preparation for fitting before you buy.
Engine control unit Honda Civic 37820-P04-G02 37820P04G02
The 37820-P04-G02 engine ECU is a unit fitted to the Honda Civic. Using signals from the sensors, it manages the engine, including fuel quantity and injection timing.
Numbers to check
- 37820-P04-G02 – Honda part number
- 37820P04G02 – the same number without the dash
Every character must match, including the final letters. If you are not sure, send us a photo of the label.
When the ECU may be faulty
- the starter cranks but the engine does not fire,
- the diagnostic tool cannot connect to the ECU,
- an engine warning light and fault codes that remain after replacing sensors,
- signs of moisture or corrosion on the connectors or circuit board.
Rule out the battery, fuses and connectors first – they are often the real cause.
Preparation for fitting
A used engine ECU usually has to be programmed and matched to the car’s immobiliser.
Before ordering, ask us about the preparation options for the 37820-P04-G02 unit and send us the numbers from the label of your ECU.
Read more about the variants on our Locked & Unlocked ECUs page.
Frequently asked questions
| Can I fit an ECU with a different number suffix? |
|---|
| A different suffix can mean a different software or hardware version. Send us a photo of the label and we will check whether the 37820-P04-G02 ECU is suitable. |
| Will the ECU start the engine straight after fitting? |
| A used ECU usually needs programming and matching to the immobiliser. Ask us about the preparation options before purchase. |
| What condition is the ECU in? |
| It is a used part, fully working and in good condition. The warranty period is shown in the product features table. |
Not sure which variant to choose? Email contact@auto24parts.com with the numbers from your label – we will check the available options.
