OBD Guide

P2ADC

Reductant Tank Temperature Sensor B Circuit High

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$22–89 (est.)

Symptoms

  • Check Engine Light Is On
  • Reduced engine power
  • Possible SCR error messages
  • Increased reagent consumption
  • Unstable operation of the SCR system

Causes

  • Reagent temperature sensor B fault
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Problems with the SCR control module
  • Corroded contacts or damaged wiring

How to Fix

  1. Check resistance and temperature sensor readings
  2. Inspect the wiring harness for damage
  3. Check the contacts in the sensor connector
  4. Test the sensor circuit with a multimeter
  5. If necessary, replace the temperature sensor

Related codes

Error P2ADC by Vehicle Brand