Land Rover Bosch M5.2.1 Engine ECU Repairs

Type: Bosch Engine Management
Fits: Land Rover
Fuel: Petrol
Ref: ECUT72195

Note: This ECU may also fit other models.

Our table below is not printed in number order: 0261204902 sits on the row above 0261204901. If the Bosch number on a Land Rover engine ECU appears in our table, look for that whole number rather than counting down to where it might be expected.

This M5.2.1 page then turns to the Land Rover numbers our table prints, the record row by row, and the repair in our UK workshop.

Find the number, not the place

Each Bosch number in our table opens 0261204, and its last three digits are where one row differs from another.

Two pairs in our table differ only at the final digit. 0261204476 and 0261204477 sit on consecutive rows, lower number first. 0261204902 and 0261204901 also sit on consecutive rows, but with the higher number first.

So if the number on the unit is 0261204901, its row in our table is the one directly below 0261204902.

On a unit, a Bosch number may be printed with spaces, as 0 261 204 476. If the Bosch number on the unit appears in our table, a section below gives what is on record for it.

NNN, then 100, on the Land Rover side

Our table prints a Land Rover number beside each Bosch number in it. In our table those numbers open NNN100, so the three digits that follow are the ones to compare. NNN100470 and NNN100480, for instance, differ at the second-to-last digit: 7 against 8.

The Land Rover number may appear on a separate label on the unit, and may be printed with spaces, as NNN 100 660.

First row: 0261204476

Our table prints NNN100470 beside 0261204476. 0261204476 is on record with the Land Rover number NNN100470. The car on record for 0261204476 is the Land Rover Discovery. An engine size of 4.0 litres is on record for 0261204476.

Second row: 0261204477

Beside 0261204477, our table prints NNN100480. 0261204477 is on record with the Land Rover number NNN100480. NNN100480 is on record for the Land Rover Discovery.

Third row: 0261204895

Our table prints NNN100640 beside 0261204895. 0261204895 is on record with the Land Rover number NNN100640. The Land Rover Discovery is the car on record for 0261204895.

Fourth row: 0261204902

On a unit, 0261204902 may be printed with spaces, as 0 261 204 902. Its final digit is 2, and in our table it sits above 0261204901. The Range Rover is the car on record for 0261204902.

Fifth row: 0261204901

Our table prints NNN100660 beside 0261204901. 0261204901 is on record with the Land Rover number NNN100660. A Land Rover Range Rover is the car named on record for 0261204901.

From arrival to final testing

An engine ECU can be posted to us from anywhere in the UK. When it arrives, it is logged and visually inspected, tested electrically, and then taken through diagnostics specific to its fault.

We contact you with the outcome. No chargeable work begins until you have authorised it.

Our own engineers carry out the repair in our own UK workshop, and none of it is subcontracted. Working under a microscope with temperature-controlled rework equipment, they repair the specific fault at component level rather than swapping the whole unit.

The repair is complete only once the unit passes final testing. Our warranty then covers the specific repair we made for 24 months, and it is non-transferable.

Contact us for a quote through the Repair Form that starts an engine ECU repair.

One level up is the wider Land Rover engine ECU repair page, and above that is where our engine ECU repairs are introduced. The What We Repair page sets out the range of engine ECUs we repair.

Our table follows, in the same row order as above.

Common part numbers associated with this type of unit