OBD Guide

P2B40

A Camshaft Position Actuator Position Sensor B Range/Performance Bank 1

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

Symptoms

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

Causes

  • Faulty camshaft position sensor
  • Damage to sensor wiring or connectors
  • Problems with the variable timing system (VVT)
  • Sensor is dirty or worn
  • Engine control unit (ECU) malfunction

How to Fix

  1. Check the condition of the camshaft position sensor
  2. Check the integrity of wiring and connectors
  3. Clean or replace sensor if necessary
  4. Check the operation of the VVT system
  5. If necessary, replace the camshaft position sensor

Related codes

Error P2B40 by Vehicle Brand