OBD Guide

P047D

Exhaust Pressure Sensor B Circuit High

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
  • Deteriorating fuel economy
  • Unstable engine idling

Causes

  • Exhaust gas pressure sensor B malfunction
  • Open or short circuit in wiring harness
  • Poor contact in the sensor connector
  • Engine control unit (ECU) malfunction

How to Fix

  1. Check the integrity of the wiring harness and sensor connector
  2. Check resistance and signal of exhaust gas pressure sensor B
  3. Replace sensor if necessary
  4. Check and, if necessary, reflash the ECU

Related codes

Error P047D by Vehicle Brand