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P0472
System
Powertrain (Emissions)
Scanner required
Full-system scanner (engine, ABS, SRS, transmission, service resets)

Exhaust Pressure Sensor Low

Understand P0472, common causes, and the right TOPDON scanner to diagnose it.

Exhaust pressure sensor circuit low voltage.

Common symptoms

  • Check engine light
  • False DPF codes

Typical causes

  • Short in sensor circuit
  • Failed sensor
  • Connector at DPF

What scanner do you need?

Full-system scanner (engine, ABS, SRS, transmission, service resets)

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

What does P0472 mean?
P0472 indicates exhaust pressure sensor low. Exhaust pressure sensor circuit low voltage.
Can I diagnose P0472 with a basic code reader?
P0472 may set in the engine module, but related diagnostics often benefit from an enhanced or full-system scanner with live data and freeze frame.
Which TOPDON scanner do I need for P0472?
Full-system scanner (engine, ABS, SRS, transmission, service resets) See recommended tools on this page.
Is it safe to drive with P0472?
It depends on the code and symptoms. Flashing check engine lights and misfire codes should be addressed immediately. Consult a professional if unsure.