P0473 - Exhaust Pressure Sensor High Input

The exhaust pressure sensor signal is higher than expected.

Code Overview

The exhaust pressure sensor signal is higher than expected.

Common Causes

• Failed exhaust pressure sensor
• Plugged pressure tube or damaged hose
• Wiring or connector issue

Diagnostic Steps

1. Inspect the pressure tube and sensor connector
2. Check live exhaust pressure data against engine load
3. Inspect the harness for heat damage or restriction

Likely Repairs & Cost Guides

Use test results to confirm the fault before pricing the repair.

Related OBD Codes

Browse the closest code-family pages when the same fault pattern often shows up nearby.

Next Steps

Move from the code to a diagnosis path, then into repair pricing once the fault is confirmed.