OBD Guide

P047B

Exhaust Pressure Sensor B Circuit Range/Performance

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Unstable engine operation

Causes

  • Exhaust gas pressure sensor B malfunction
  • Open or short circuit in the sensor circuit
  • Poor connection or corrosion in connectors
  • Problems with the exhaust system
  • Engine control unit (ECU) malfunction

How to Fix

  1. Check the continuity of the exhaust gas pressure sensor B circuit
  2. Inspect connectors and wiring for damage
  3. Check sensor resistance and voltage
  4. Replace exhaust gas pressure sensor B if necessary
  5. Check the exhaust system for leaks or blockages

Related codes

Error P047B by Vehicle Brand