P256B

Engine Idle Speed Selector Sensor/Switch Range/Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Unstable idle speed
Engine stalls at idle
Floating speed
Increased fuel consumption
Check Engine light comes on

Causes

Idle speed sensor malfunction
Problems with electrical connections
Contamination or mechanical damage to the sensor
Engine management system malfunction
Wiring Harness Problems

How to Fix

Check the electrical connections of the sensor
Clean or replace idle speed sensor
Check wiring harness for damage
Carry out diagnostics of the engine management system
Replace sensor if necessary

Related codes

P0505 P0506 P0507