OBD Guide

P2488

Exhaust Gas Temperature Sensor Circuit Range/Performance Bank 2 Sensor 5

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Unstable engine idling
  • Increased emissions of harmful substances

Causes

  • Exhaust temperature sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Wiring harness damage
  • Problems with the engine control unit

How to Fix

  1. Check the integrity of the sensor circuit
  2. Inspect connectors and contacts for corrosion
  3. Check sensor resistance (compare with specifications)
  4. Replace exhaust temperature sensor if necessary
  5. Reset the error code and check if it returns

Related codes

Error P2488 by Vehicle Brand