P2578 Possible Causes
- Faulty turbocharger speed sensor
- Turbocharger speed sensor harness is open or shorted
- Poor electrical connection in turbocharger speed sensor circuit
How to Fix Code P2578
Check the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
Check engine light on (or service engine soon warning light)
P2578 Meaning
The powertrain control module (PCM) monitors the signal from the turbocharger speed sensor circuit. The PCM sets the OBDII code when the turbocharger speed sensor signal is outside factory specifications.