OBD Guide

P23F1

Camshaft B Position Signal Output Circuit High Bank 2

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–56 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Increased fuel consumption
  • Unstable engine idling
  • Problems starting the engine

Causes

  • Camshaft position sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Problems with the engine ECU
  • Mechanical problems in the timing system

How to Fix

  1. Check the condition of bank 2 camshaft position sensor B
  2. Check the integrity of the sensor circuit and connectors
  3. Measure resistance and voltage at the sensor
  4. Check the operation of the VVT system
  5. If necessary, replace the sensor or repair the wiring

Related codes

Error P23F1 by Vehicle Brand