VW Caddy cranks but won't start, Fuel system failure

Had a similar issue with a 2015 VW Golf 1.4 TSI. The engine stalling and cranking without starting pointed to battery cable connections. While engine diagnostics showed multiple error codes, the root cause was corroded battery terminals causing inconsistent power delivery. Basic checks revealed the terminals needed cleaning and tightening. Despite the engine software showing various faults, it was purely electrical. The engine surge symptoms disappeared after proper terminal maintenance and clearing the stored error codes. This might not seem serious but incorrect diagnosis can lead to unnecessary repairs. Several symptoms match yours: engine cranking, multiple fault codes, and unsuccessful previous repairs. A specialized VW workshop should first verify: Battery cable connection integrity, Terminal corrosion, Ground strap condition, Battery load test results The engine diagnostics might show misleading codes due to voltage drops. Getting these basics checked before exploring fuel injection or engine software issues makes sense.

Thanks for sharing that experience. My Caddy also started having very similar symptoms and the engine diagnostics were giving mixed signals. My mechanic initially suspected ECU failure which got me worried about expensive repairs. After reading about your battery cable issue, I made sure to get those checked first. Would be really helpful to know how much the repair ended up costing you and if youve had any other engine surge issues since then? Might need to look for a specialized workshop if the problem persists.

Just wanted to update that my Golf hasnt shown any engine control malfunction or ECU issues since getting the battery connections sorted. The entire fix was pretty straightforward and cost 155€, which covered cleaning and securing all cable connections properly. The engine light stopped appearing after clearing the stored codes, and there have been zero engine stalling incidents in the months since. What initially looked like a potential ECU failure turned out to be just poor electrical contact causing system confusion. Worth mentioning that loose battery connections can trigger all sorts of misleading engine software errors. Getting this basic electrical issue fixed likely saved significant money compared to replacing ECU components unnecessarily. If your mechanic isnt comfortable diagnosing electrical issues, finding a workshop that specializes in VW electrical systems might be worth considering.

Wanted to update everyone on what happened with my Caddy. After reading the advice here, I took it to a different workshop specializing in VW diagnostics. Smart move, as it turned out. The new mechanic found the ECU issue was actually triggered by a faulty wiring harness connection, similar to the battery cable problem mentioned. Engine diagnostics initially pointed to several faults, but after a thorough electrical check, they located the real problem. The repair cost came to 280€ including labor and parts. They had to replace a section of the wiring harness and reset the engine software. The fuel injection system was working fine, it just wasnt getting proper signals due to the bad connection. Car starts perfectly now and all error codes are gone. Really glad I didnt jump straight to replacing expensive ECU components. Sometimes these engine control problems turn out to be much simpler than they first appear.