Brera Power Loss & Limp Mode: Help Needed

Based on my experience with a similar issue on my Alfa Romeo 159 from 2009, I can share some relevant insights, as I have some experience with these engines. The symptoms you describe sound very familiar. My car computer also triggered multiple fault codes and went into limp mode after I had installed a third-party performance chip. The engine management system detected inconsistencies and activated a safety protocol to prevent potential damage. The fix required a complete reset of the engine control unit and removal of the aftermarket modifications. The workshop had to use their professional scan tool to clear all fault codes and restore factory settings. The entire car diagnostic process took about 2 hours, and the total cost was 180 Euro. Before suggesting specific solutions, it would be helpful to know: What year is your Brera? Have you had any recent modifications or tuning done? Are you able to read the specific fault codes? Has the problem appeared suddenly or gradually? This information would help determine if your issue is similar to what I experienced with my vehicle diagnostics system. A proper check engine diagnosis from a qualified technician might be necessary to identify the root cause and prevent potential engine damage.

Mileage is 57315 KM and last service was 2 months ago. The auto scanner showed fault codes P0201 and P0203 which point to fuel injector circuit issues. After checking several forums, others had similar limp mode symptoms with these diagnostic codes. The engine cuts power significantly when these faults appear. The workshop quoted 450 Euro for injector replacement and diagnostic testing, suggesting the injectors might be failing or have electrical connection problems. They mentioned the 2006 Brera commonly develops injector issues around this mileage. Before proceeding with repairs, I wanted to confirm if this price seems reasonable and if anyone had success fixing similar fault codes through simpler means like cleaning the injectors or checking wiring connections first?

Having gone through almost the exact same issue with my 159, I can confirm the fault codes P0201 and P0203 are indeed serious injector circuit problems that need proper attention. When these dashboard lights appeared on my car, I initially tried cleaning the injectors and checking connections, but it did not resolve the underlying issue. The quoted 450 Euro for injector replacement and diagnostics is actually quite reasonable. My repair ended up costing 520 Euro for similar work. The car computer continued limiting power until the faulty injectors were replaced. A professional scan tool confirmed the fix was successful. The workshop is correct about these models developing injector problems around your mileage range. My issues started at 62000 km. Consider replacing all injectors as preventive maintenance, since they tend to fail in sequence. This prevents repeated visits to the shop. Quick tips before the repair: Get the fuel system cleaned professionally, Check the wiring harness for any obvious damage, Make sure your fuel filter is not clogged, Have them inspect the fuel pressure while doing diagnostics The power reduction you are experiencing is the engine management protecting itself. While frustrating, it is better to address this promptly before it potentially causes more extensive engine damage.

Thanks for the detailed information about your 159 repair experience. My Brera just hit that 57k mark, so hearing about failures around 62k is concerning. Looking at the costs you mentioned, 520 Euro vs my quote of 450 Euro, it seems the workshop price is fair. I will first check the wiring harness myself this weekend since its an easy visual inspection. But given that multiple fault codes persist in the vehicle diagnostics and the engine keeps going into safety mode, I will probably book it in next week for the full injector replacement. The limp mode and check engine warnings are really limiting my driving, so waiting longer might not be smart. Better to fix it now than risk bigger engine problems. Will make sure they do the fuel system cleaning and pressure testing like you suggested before installing new injectors. Would have preferred a simpler fix, but at least now I know what to expect with the repair. Will update the forum once its sorted to help others who might face similar injector circuit issues.