SIMOS PCR2.1 failure causing P2146 in Volkswagen Passat & Caddy

The SIMOS PCR2.1 engine ECU is fitted to 1.6L Volkswagen Caddy and Passat diesel vehicles produced between 2009 and 2016. A failure of this ECU will cause your Caddy or Passat to store the P2146 fault code, indicating a fault with the injector supply circuit. As a result, your vehicle may develop a range of fault symptoms including a complete non start, glow plug light flashing, cylinders misfiring, and engine cutting out intermittently. This failure of the SIMOS PCR2.1 is common across several manufacturers such as Volkswagen, Audi, Skoda, and Seat, making them prone to the same fault symptoms.

In addition to the P2146 fault code stored in your Passat or Caddy, a diagnostic tool may also detect P0202 and P0204 fault codes, which both signal injector problems that can lead to serious engine issues. Sadly, these symptoms will persist and worsen over time unless your Passat or Caddy ECU is rebuilt.

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What causes the SIMOS PCR2.1 ECU to malfunction?

The SIMOS PCR2.1 ECU often fails due to component breakdowns within the ECU that affect fuel injector operation. Consequently, your Caddy or Passat will log the P2146 warning code, indicative of an open circuit in the fuel injector supply voltage, creating symptoms such as engine misfiring and complete non start.

When your Volkswagen Passat or Caddy ECU fails, you’ll most likely be advised to get a costly brand-new unit from the manufacturer. While this option gets your car back on the road, it does not guarantee that the same fault will not reoccur if the internal components breakdown again. On top of that, a new unit will cost you an extra coding fee and comes with a limited warranty.

We offer a longer lasting and more affordable option. We take your faulty SIMOS PCR2.1 ECU and rebuild it using higher-than-standard OEM components, engineering out the original flaw that caused it to breakdown and trigger the P2146 code in your Passat or Caddy. In addition to this, we offer an unlimited mileage warranty that covers your Passat or Caddy ECU for life. This option not only gets you back on the road, but it also gives you more confidence and peace of mind that your ECU will not fail later down the road.

Common fault codes :

A faulty Passat or Caddy ECU will cause your vehicle to store one or more of the following fault codes:

• P2146 - Fuel injector supply voltage circuit open.
• P0202 – Injector 2 circuit malfunction.
• P0204 – Cylinder 4 injector circuit.

Location on the vehicle:

The ECU is located in the engine bay at the side of the battery.

Test and rebuild: 

When we receive your Passat or Caddy ECU, we thoroughly test it using our Hardware-in-the-loop testing rigs custom-built to simulate real-word loads and driving conditions. We do this to identify the faults and defects with your ECU. Next, we rebuild it using higher quality components guaranteed to outlast any replacement unit.

Programming:

During the rebuilding process, we preserve the original coding of your unit. All you’ll need to do when you receive it is plug and play.

Quality:

Our 0.49% work defect rate across all our rebuilds makes us confident in our quality control measures that enable us provide you unlimited lifetime warranty.

Warranty:

Lifetime unlimited mileage*

How do I get my unit rebuilt?

To pay for your SIMOS PCR2.1 rebuild, click the Shop Now link above, select your part number, and click: Get yours rebuilt.

Print the payment/booking confirmation email.

Package the ECU inside a sturdy box with plenty of packaging material (make sure you include your confirmation email in the box).

Send us your package by tracked courier (the shipping instructions are on the confirmation email).

Once received we will test, rebuild, and return your ECU with an unlimited mileage lifetime warranty. (if your unit turns out not to be faulty then we will refund your payment less a small testing fee and return shipping)

It’s not a problem if you don’t want to pay up front.

All you have to do is fill in and submit this test form.

After submitting the form, print the booking confirmation email, and follow the packaging and shipping instructions above.

NOTE: If you choose not to pay upfront, we will test your ECU and call you to advise on the outcome of the test. We will only take payment over the phone using a debit/credit card IF you choose to go ahead with your rebuild.

If you require further information, then please contact us.