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 Suzuki Alto 1.0 Bosch 33920-68K02 0261S04260
Vendors's code: 3392068K02
Product code: 3392068K02
Barcode:
Code 39:
ISBN:
€81.30
Price
€81.30
€100.00
Price
€100.00
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Engine control unit Suzuki Alto 1.0 Bosch 33920-68K02 0261S04260
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Looking for the 33920-68K02 ECU for your Suzuki Alto 1.0?
We offer a used, fully working Bosch engine control unit with part numbers 33920-68K02 and 0261S04260. It fits if the same numbers appear on the label of the ECU in your car. Available locked or unlocked.
Engine control unit Suzuki Alto 1.0 Bosch 33920-68K02 0261S04260
This used Bosch 33920-68K02 engine computer for the Suzuki Alto 1.0 processes sensor signals and calculates the engine’s operating parameters. The label shows the following markings: 0 261 S04 260, 33920M68K02, 33920-68K02 068K0, C0.
Numbers to check
- 33920-68K02 – Suzuki part number
- 0261S04260 – Bosch number, also printed as 0 261 S04 260
- 33920M68K02 – additional marking
- 068K0 – additional marking
Compare them with the sticker on the ECU in your car. The number decides the fit, not the model alone – Suzuki used different ECU versions.
Typical fault symptoms
- 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.
Locked or unlocked?
There are two variants: locked, with the previous vehicle’s data and immobiliser, for garages, and unlocked, which we prepare before dispatch.
Not every unlocking method is possible for every ECU – it depends on the number, the software and the car’s immobiliser. Before ordering the unlocked version, ask us about the options for the 33920-68K02 ECU.
All variants are described on our Locked & Unlocked ECUs page.
Frequently asked questions
| Is 0261S04260 the same ECU as 33920-68K02? |
|---|
| Yes. Both numbers appear on the label of the same ECU. |
| 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. |
| 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. |
Need help choosing? Contact us at contact@auto24parts.com.
