P0726

Engine Speed Input Circuit Range/Performance

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–56 (est.)

Symptoms

Unstable engine operation at idle
Problems with gear shifting (for automatic transmission)
Check Engine light comes on
Reduced engine power
Incorrect tachometer readings

Causes

Engine speed sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Wiring harness damage
Interference from other electronic devices

How to Fix

Check the condition of the engine speed sensor
Inspect the sensor circuit for damage
Check the contacts in the sensor connector
Test sensor resistance
Replace sensor if necessary

Related codes

P0725 P0727 P0728