Fault codeP0320

Ignition/Distributor Engine Speed Input Circuit Malfunction

What this code means

Ignition/Distributor Engine Speed Input Circuit Malfunction.

P0320 is a generic code: it means the same thing on every make. P0320 belongs to family P03xx — Ignition and misfire. Its page explains how to read a code and groups all its codes by part.

Type of fault

The control unit has detected an electrical anomaly on this circuit without saying exactly which. Diagnosis starts with a visual check of the wiring and connector, then measuring the component — resistance, supply, ground — with a multimeter.

Crankshaft position sensor (engine speed)

The crankshaft sensor faces a toothed wheel on the crankshaft or flywheel and counts its teeth as they pass. From that signal the control unit knows the engine speed and the exact position of the pistons: it is the reference for all ignition and injection timing.

What you notice

Without this signal the engine cannot run. A failing sensor typically causes a sudden stall, often when hot, or an engine that cranks but will not start; the rev counter may drop to zero while driving.

How to check it

Look at the connector and the wiring near the gearbox or the crankshaft pulley, where it is exposed to heat and dirt. Clean metal debris off the sensor tip, and check the toothed wheel for missing or damaged teeth. If the engine still runs, Klaro's rev reading dropping out at the moment of a stutter is a strong clue.

Watch it live in Klaro

With an OBD2 adapter plugged in, these live readings show the part at work, when your car reports them:

• Engine RPM
• Timing advance

What to do

Have it checked promptly. A misfire sends unburnt fuel into the exhaust and destroys the catalytic converter within a few dozen kilometres. If the light is flashing, stop driving.

How to read this code

• PPowertrain
• 0standardised code
• 3Ignition and misfire
• 20P0320

Other codes for the same part

• P0321Ignition/Distributor Engine Speed Input Circuit Range/Performance
• P0322Ignition/Distributor Engine Speed Input Circuit No Signal
• P0323Ignition/Distributor Engine Speed Input Circuit Intermittent
• P0335Crankshaft Position Sensor A Circuit Malfunction
• P0336Crankshaft Position Sensor A Circuit Range/Performance
• P0337Crankshaft Position Sensor A Circuit Low Input
• P0338Crankshaft Position Sensor A Circuit High Input
• P0339Crankshaft Position Sensor A Circuit Intermittent
• P0370Timing Reference High Resolution Signal A Malfunction
• P0371Timing Reference High Resolution Signal A Too Many Pulses
• P0372Timing Reference High Resolution Signal A Too Few Pulses
• P0373Timing Reference High Resolution Signal A Intermittent/Erratic Pulses