P0320

Ignition/Distributor Engine Speed Input Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$22–111 (est.)

Symptoms

Misfires
Unstable idle
Difficulty starting the engine
Power Loss
Increased fuel consumption

Causes

Engine speed sensor malfunction
Open or short circuit in wiring harness
Poor connection or corroded contacts
Ignition module malfunction
Circuit Grounding Problems

How to Fix

Check the integrity of the sensor wiring harness
Check the connections and contacts of the sensor
Check resistance and sensor signal
Replace sensor if necessary
Check and replace ignition module (if applicable)

Related codes

P0300 P0301 P0302 P0303 P0304