P0245/16629 on 1.4 TFSI and TSI VW/Audi engines: Short circuit in the N75 Solenoid

Bosch MED17.5.5

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The 1.4 TFSI & 1.4 TSI engines fitted to numerous Audi, Seat, Skoda and Volkswagen models between 2007 and 2013 are known to suffer from the P0245 fault code. Also displayed as the 16629/000581 fault codes – "Solenoid Valve (A) for Boost Pressure Control (N75): Short to Ground". 

The fault indicates that the N75 solenoid valve, which regulates the turbo boost pressure via a 5-volt control, is experiencing a short to earth. If the ECU detects this, more often than not, the car will enter limp mode to avoid permanent engine damage. 

Symptoms and causes of this fault

Technically, the fault can be an incorrect 5-volt supply from the ECU itself, which causes the N75 control valve to inadvertently short-circuit. In use, drivers often report an irregular turbo response, loss of power and possibly the car entering limp mode. This is often indicated by the engine management light (MIL) illuminating. 

Solution for VAG fault code P0245/16629

The first thing to do if you have a P0245/16629 fault code is to check and inspect the N75 valve and its wiring. This is an important step as these two are often the cause of the fault. If no fault is found, the issue is likely the Bosch MED17.5.5 ECU.

At ACTRONICS we're able to expertly remanufacture the Bosch MED17.5.5 ECU. with our specialised repair service, focussing on the internal electronics of the ECU. The process offers a cost-effective, sustainable alternative to new replacements. 

The remanufactured part meets the OE specifications and is supplied plug & play, which means no additional programming is required. On top of this, we back our work with a two-year warranty! 

Do you have any questions?

Do you have questions about having the MED17.5.5 VAG ECU repaired? Our business technical helpdesk is ready to help you.