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-PDT-E12 37820PDTE12
Vendors's code: 37820PDTE12
Product code: 0F40-9054A
Barcode:
Code 39:
ISBN:
£123.33
Price
£123.33
£151.70
Price
£151.70
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Engine control unit Honda Civic 37820-PDT-E12 37820PDTE12
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Looking for the 37820-PDT-E12 ECU for your Honda Civic?
We offer a used, working engine control unit with part numbers 37820-PDT-E12 and 6736830711. 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-PDT-E12 37820PDTE12
The 37820-PDT-E12 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-PDT-E12 – Honda part number
- 37820PDTE12 – the same number without the dash
- 6736830711 – additional marking
You will find the numbers on the casing of your current ECU. A similar-looking unit will not necessarily fit – the full number is what counts.
Symptoms of a faulty engine ECU
- the engine will not start despite a good power and fuel supply,
- no communication with the ECU during diagnostics,
- limp mode with no sensor fault,
- damage after water ingress or a voltage spike.
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-PDT-E12 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
| 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 details should I send before ordering? |
| All the numbers from the label of your current ECU, or a clear photo of it. Based on that, we will check the fit and the possible variants. |
| 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-PDT-E12 ECU is suitable. |
Not sure which variant to choose? Email contact@auto24parts.com with the numbers from your label – we will check the available options.
