Swift Diesel Turbo Sensor Symptoms Causing Major Power Loss

Had similar boost issues with a 2013 Swift 1.3L diesel last month. The symptoms match exactly what happened, jerky acceleration, whistling noises, and poor fuel economy pointed to a turbocharger system problem. The turbocharger was actually fine, but the boost pressure sensor wiring had deteriorated near the intake manifold connection. This triggered the check engine light and caused incorrect air-fuel mixture readings. The air intake system showed normal when tested, but the faulty sensor was sending wrong signals. Initial diagnosis suggested a boost leak, but thorough testing revealed the wiring issue. The repair involved replacing the pressure sensor connector and recalibrating the ECU. Not a major repair in terms of mechanical work, but crucial for proper engine function. This is definitely something to get checked soon, running with incorrect boost pressure readings can lead to more serious engine damage over time. Main signs it was the sensor rather than the turbocharger: consistent whistling at specific RPMs and erratic boost behavior rather than total boost loss. Worth getting a proper diagnostic scan first, the error codes will point directly to whether its a sensor issue or something more serious in the turbocharger system.

Thanks for the detailed response about the boost sensor issue. Good to hear it was just wiring and not the full turbocharger unit. Would be helpful to know what you paid for the repair, parts and labor? My check engine light keeps coming back even after resets, so expecting a similar fix. Also curious if youve had any other turbo boost problems since the repair? My fuel consumption is still terrible and want to make sure fixing the sensor will actually solve it.

The boost pressure sensor repair fixed everything completely, no more engine light or performance issues since then. Total bill came to 95€ for fixing the faulty cable connection at the sensor plug. Much cheaper than initially feared. The turbo system runs perfectly now and fuel consumption returned to normal right after the repair. The key was diagnosing the actual sensor wiring problem rather than assuming a bigger boost leak or turbocharger issue. When the air intake and boost signals are working correctly, the engine management can properly control fuel delivery. A proper diagnostic scan pointed straight to the boost sensor fault, preventing unnecessary parts replacement. This kind of repair typically takes under 2 hours since its mainly electrical troubleshooting rather than heavy mechanical work. The persistent check engine light in your case strongly suggests a similar sensor communication problem. Getting it fixed soon will prevent the excessive fuel consumption from continuing.

Wanted to update on my boost sensor situation, finally got it sorted. Took it to a small specialized diesel shop rather than the dealer. The mechanic diagnosed it in about 30 minutes using proper diagnostic equipment. Just like suggested, it was the boost pressure sensor wiring that had corroded. The repair was straightforward, replaced the damaged wiring harness near the sensor and recalibrated the engine control unit. Total cost came to 120€ including parts and labor. The check engine light cleared immediately and hasnt come back. Best part is the turbo system is working perfectly now. Fuel consumption dropped back to normal and the engine pulls strong again with no jerking or whistling. The whole job took about 2 hours. Such a relief it wasnt a major turbocharger issue. Thanks again for the advice, it helped me approach the mechanic with better understanding of the likely problem. Saved both time and money by focusing on the sensor rather than assuming worst case scenarios.