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.
Throttle Body Volkswagen Passat B5 (3B/3BG) Audi A4 B5 Siemens 408238323006 06B133062L
Vendors's code: 06B133062L
Product code: 408238323006
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Code 39:
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Throttle Body Volkswagen Passat B5 (3B/3BG) Audi A4 B5 Siemens 408238323006 06B133062L
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How can you check whether the 408238323006 throttle body fits your car?
This is a used, working Siemens throttle body with part numbers 408238323006 and 06B133062L, for: Volkswagen Passat B5 (3B/3BG), Audi A4 B5, Skoda Superb I (3U) (engines: 1.6 / 2.0), 2001–2002. Before ordering, compare the number with the label on the throttle body fitted to your car.
Throttle Body Siemens 408238323006 06B133062L – Volkswagen Passat B5 (3B/3BG), Audi A4 B5, Skoda Superb I (3U)
The Siemens 408238323006 throttle body controls the amount of air drawn into a petrol engine. In electronic throttle bodies, the throttle plate position is set by the engine control unit based on the accelerator pedal signal. According to the product data, it fits: Volkswagen Passat B5 (3B/3BG), Audi A4 B5, Skoda Superb I (3U); engines: 1.6 / 2.0; production years: 2001–2002.
Part numbers to compare
- 408238323006 – also printed as 408-238-323-006
- 06B133062L – also printed as 06B 133 062 L
Check whether the throttle body in your car carries the number 408238323006 or 06B133062L. The model name alone (Volkswagen Passat B5 (3B/3BG), Audi A4 B5, Skoda Superb I (3U)) is not enough – throttle bodies with other numbers were also fitted to these cars.
Common throttle body faults
Typical symptoms of throttle body problems in Volkswagen, Audi or Skoda cars:
- worn track in the throttle position sensor – fluctuating revs, jerking on light throttle,
- carbon deposits on the throttle plate – rough idle, engine stalling when coming to a stop,
- in electronic throttle bodies: failed motor or gear drive – limp mode, reduced power, engine warning light.
When measurements or fault codes confirm the problem and cleaning has no effect, the throttle body is replaced with one carrying the same number. After replacement, many cars need an adaptation in the engine control unit.
Frequently asked questions
| How do I check that the 408238323006 throttle body fits my car? |
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| Compare the number 408238323006 or 06B133062L with the label of the throttle body fitted to your car (Volkswagen Passat B5 (3B/3BG), Audi A4 B5, Skoda Superb I (3U)). |
| Which engines does the 408238323006 throttle body fit? |
| According to the product data, it fits 1.6 / 2.0 engines in: Volkswagen Passat B5 (3B/3BG), Audi A4 B5, Skoda Superb I (3U), 2001–2002. |
| Does the throttle body need to be adapted (relearned) after replacement? |
| In many cars, yes – the engine control unit has to learn the positions of the new throttle body. This is done with a diagnostic tool or according to the vehicle manufacturer's procedure. |
| What condition is this throttle body in? |
| It is a used part in good working condition. The warranty period is shown in the product specification table. |
Unsure about compatibility? Send us the number from your throttle body label and we will check whether this part fits.
