How is fault code P0320 fixed?

A typical diagnostic sequence used by mechanics, provided here for educational reference only. Diagnostic work should be performed by a qualified mechanic with the appropriate tools and training. 1. Scan it and read off everything stored, not just P0320. If you see P0335, P0340 or misfire codes alongside it, that narrows down whether it's the crank side, cam side, or the harness common to both 2. Check the battery and charging system. Low or noisy voltage will give you erratic sensor readings, and there's no point chasing the sensor until the supply is solid 3. Get under the bonnet and physically inspect the sensor connectors and harness. Unplug them, look for green crusty pins, oil, water, or chafed wires near hot or moving parts. A lot of these turn out to be a duff connector rather than a duff sensor 4. Back-probe the sensor's reference voltage (around 5V on most setups) and earth with a multimeter, then watch the signal on a scope while cranking if you have one. A clean waveform that stutters when hot points straight at the sensor 5. Pull the sensor and check the reluctor ring for missing or damaged teeth, debris, and play. A clean signal needs a clean wheel running true 6. If

Ignition/Distributor Engine Speed Input Circuit Malfunction

Jump to the fix

Severity

High

Can I keep driving?

Avoid extended driving; visit a service soon.

First step

A typical diagnostic sequence used by mechanics, provided here for educational reference only. Diagnostic work should be performed by a qualified mechanic with the appropriate tools and training. 1. Scan it and read off everything stored, not just P0320. If you see P0335, P0340 or misfire codes alongside it, that narrows down whether it's the crank side, cam side, or the harness common to both 2. Check the battery and charging system.

PPowertrain
0Generic code
3Ignition / Misfire
20Sequence number

What does it mean?

P0320 is a OBD II fault code that indicates that there is an issue with the Ignition/Distributor Engine Speed Input Circuit. This code is also commonly referred to as a crankshaft or camshaft position sensor error code. The Engine Control Module (ECM) has detected an issue with the the rotation speed or the position of the crankshaft or camshaft.

The ECM receives an input from the crankshaft and camshaft position sensors based on the engine configuration and the year, make and model of the vehicle. The input is used to monitor the speed and position of the crankshaft and camshaft. Some automobiles also incorporate an ignition/distributor speed sensor that is monitored by the ECM. This information is used to adjust the ignition timing and the fuel settings to adapt to engine load variations and improve performance.

Symptoms

Likely causes

How to fix it

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This information follows the generic OBD-II definition and does not replace a vehicle-specific diagnosis. The severity rating is rule-based; an authorised diagnostic reading is required for a definitive answer.