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 Nissan Primera 1.6 MEC20525
Vendors's code: MEC20-525
Product code: MEC20525
Barcode:
Code 39:
ISBN:
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Engine control unit Nissan Primera 1.6 MEC20525
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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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When is engine control unit MEC20525 the right choice for Nissan Primera?
Used Nissan engine control unit with number MEC20525. Send us the numbers from the label on your control unit.
What does number MEC20525 mean on Nissan engine control units?
According to the listing, this is a control unit for Nissan Primera with a 1.6 engine. Control unit MEC20525 is a used original module, and its numbers help tell it apart from similar versions. The listing states that this control unit is for: Nissan Primera. Engine given in the listing: 1.6. The listing also gives the markings 9Q, A1. They help tell the control unit versions apart, but the full part number is what decides compatibility.
Numbers to compare
Below are the numbers as they appear in the listing, together with the single-string form used in catalogues:
- MEC20525, control unit manufacturer's number.
Matching by number is more reliable than matching by car model. Compare all the numbers and ask us if any of them does not match.
Control unit variant
This listing is for a control unit in the following variant(s): Locked / Unlocked. 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.
Faults that call for checking the control unit
- the engine warning light comes on and does not go out,
- fuel consumption rises for no obvious reason,
- faults appear and disappear, usually once the engine has warmed up,
- the engine jerks when accelerating.
Only diagnostics can confirm an engine control unit failure, so read the fault codes before buying. After replacement, the control unit may need to be programmed or adapted to the car.
Questions and answers
| Where do I find number MEC20525 on my control unit? |
|---|
| The numbers are on a sticker or printed on the housing of the control unit. Take a close-up photo of the label in good light so that all the characters can be read. |
| Are the make and model of the car enough to choose the part? |
| No. A single model comes with different versions of the control unit, depending on the engine, the software version and the equipment. The most reliable reference is the number on the original control unit. |
| Does a lit engine warning light always mean a faulty control unit? |
| No. Read the fault codes first, because the cause may be a sensor, the wiring or the power supply. |
| What is the condition of this control unit? |
| It is an original recycled part in good condition, checked by us. Warranty details are in the product features table. |
If the numbers on your control unit differ from those given, write to us. We will check whether the right version is available in our range.
