P0320

Q: What does OBD2 code P0320 mean?

P0320 means: Ignition/Distributor Engine Speed Input Circuit Malfunction. The engine speed input circuit, which the ECM uses to time ignition and fuel delivery, has a fault.

Ignition/Distributor Engine Speed Input Circuit Malfunction

The engine speed input circuit, which the ECM uses to time ignition and fuel delivery, has a fault.

SeverityCritical

CategoryIgnition

Est. Repair Cost$150-$400

Code TypePowertrain

DIY RepairProfessional

⚡ Common Causes

›Faulty crankshaft or distributor position sensor
›Damaged wiring
›Timing reference wheel damage

⚠️ Symptoms

›Check engine light
›Engine may not start
›Stalling
›Erratic idle

✅ How to Fix — Step by Step

Step 1:Test crank/distributor sensor signal
Step 2:Inspect wiring
Step 3:Check timing reference wheel for damage
Step 4:Replace sensor if faulty

🔧 Diagnostic Tools Required

✔OBD-II Diagnostic Scanner
✔Digital Multimeter
✔Basic Hand Tools
✔Flashlight
✔Vehicle Service Manual

Using the correct diagnostic tools helps identify the root cause of P0320 before replacing parts unnecessarily. Always confirm the fault using live data and manufacturer-recommended diagnostic procedures.

💡 Pro Tip: If the engine won't start at all with this code, check the crankshaft position sensor first - it's essential for the ECM to time spark and fuel.

Repair Cost Estimate

Full Repair Estimate

$150-$400

DIY Possible?

PRO

Severity

Critical

Frequently Asked Questions

What does OBD2 code P0320 mean?+

P0320 stands for Ignition/Distributor Engine Speed Input Circuit Malfunction. The engine speed input circuit, which the ECM uses to time ignition and fuel delivery, has a fault.

What causes code P0320?+

Faulty crankshaft or distributor position sensor; Damaged wiring; Timing reference wheel damage

How do I fix code P0320?+

Test crank/distributor sensor signal; Inspect wiring; Check timing reference wheel for damage; Replace sensor if faulty

How much does it cost to fix P0320?+

Estimated repair cost for P0320 is $150-$400.

Is P0320 DIY-friendly?+

P0320 typically requires professional equipment and a qualified mechanic.