P2574
System
Powertrain (Engine)
Scanner required
Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

Turbocharger Wastegate Position Sensor Circuit Intermittent

Understand P2574, common causes, and the right TOPDON scanner to diagnose it.

Intermittent wastegate position feedback.

Common symptoms

  • Intermittent limp mode
  • Boost fluctuation

Typical causes

  • Connector vibration at turbo
  • Failing position sensor
  • Carbon on wastegate linkage

What scanner do you need?

Enhanced OBD2 scanner (live data graphs, freeze frame, battery voltage test)

Use live data and freeze frame to confirm the fault before replacing parts. ABS, SRS, and network U-codes usually require a full-system scanner.

Diagnostic tips

  • Record freeze frame data when the code first sets
  • Clear the code only after fixing the root cause
  • Check for related pending codes that point to a common issue
  • Verify battery voltage is above 12.4V before chasing sensor codes

Recommended TOPDON scanners

Frequently asked questions

Can I diagnose P2574 with a basic code reader?
P2574 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Is it safe to drive with P2574?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.