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P0322: Ignition/Distributor Engine Speed Input Circuit No Signal

Quick Answer

Not safe to drive

P0322 means the engine computer is not receiving any engine speed signal. On most modern cars that signal comes from the crankshaft position sensor, and on older cars it can come from the distributor or an ignition module. With no speed signal the computer cannot time spark or fuel, so the engine usually will not start or will stall.

Severity
Critical · Ignition
Estimated repair cost
From €70 to €1500+, varies by vehicle

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What does P0322 mean?

P0322 is a ignition-related diagnostic trouble code classified as critical severity. When your vehicle's ECU detects this condition, it stores P0322 and illuminates the check engine light.

What are the symptoms of P0322?

If your vehicle has triggered P0322, you may notice one or more of these symptoms:

  • Engine cranks but will not start
  • Engine stalls suddenly while running
  • Tachometer reads zero or does not move
  • Check engine light on
  • Engine starts again after cooling down
  • Glow plug lamp flashes on some diesels

What causes P0322?

Here are the most common causes of P0322:

  • Failed engine speed (crankshaft position) sensor

    : high

  • Open circuit, broken or chafed wiring to the sensor

    : medium

  • Corroded, loose or oil-soaked connector

    : medium

  • Damaged reluctor (toothed) wheel or missing impulse rotor

    : low

  • Failed ignition module or distributor pickup on older cars

    : low

  • Engine control unit fault, including water or coolant in the unit

    : low

Is it safe to drive with P0322?

No - address this immediately. The engine computer is receiving no engine speed signal at all, which usually means the engine will not start or has just stalled. If it stalls while driving you lose power assistance for steering and brakes. Do not drive it; arrange a tow.

How do you diagnose P0322?

Follow these steps to pinpoint the root cause of P0322:

  1. Read all codes and check whether P0335, P0336, P0339 or cam sensor codes are stored too
  2. Crank the engine while watching engine speed on a scan tool: a reading of zero while the starter turns means the signal is truly missing
  3. Inspect the sensor connector and wiring for oil, coolant, corrosion, chafing and broken wires
  4. Check that the sensor is fitted and tightly mounted and that its tip is clean
  5. Test the sensor supply, ground and signal against the manufacturer specification
  6. On older cars with a distributor, inspect the pickup and ignition module
  7. Inspect the toothed wheel for damage and check the engine control unit for water or coolant if the rest tests good

How much does P0322 cost to fix?

Repair costs for P0322 vary depending on the root cause and your vehicle. Here are typical estimates:

Repair Parts Cost Labor Cost Total Estimate DIY Difficulty
Replace engine speed (crankshaft position) sensor €20–€100 €50–€200 €70–€300 Moderate
Repair wiring or connector to sensor €10–€50 €60–€180 €70–€230 Moderate
Replace reluctor ring (tone wheel) €30–€120 €200–€600 €230–€720 Professional
Replace engine control unit with programming €400–€1200 €100–€300 €500–€1500 Professional

Prices estimated as of March 2026. Costs vary by region, vehicle, and shop.

P0322 on specific vehicles

P0322 behaves differently depending on your vehicle. Select your car below for model-specific causes and known issues:

P0322 on Volkswagen
P0322 on Saab

These codes are often seen alongside P0322 or indicate related issues:

Common questions about P0322

What does code P0322 mean?
P0322 means the engine computer sees no engine speed signal. That signal normally comes from the crankshaft position sensor. Without it the computer cannot time spark or fuel injection, so the engine will usually not start or will stall.
Is P0322 the same as P0335?
They often point at the same sensor. P0335 is the standard crankshaft sensor circuit code, while P0322 is the engine speed input code. Volkswagen Group software reports P0322 as a fault of the engine speed sensor G28, which is also its crankshaft position sensor, and older Saab 900s log P0322 for the crankshaft sensor too. On other makes check which codes are stored together and test the crankshaft sensor circuit first.
Can I drive with a P0322 code?
No. This code usually means the engine will not start or has stalled, and a stall while driving takes away power assistance for steering and brakes. Arrange a tow rather than trying to drive.
What causes P0322?
The usual causes are a failed engine speed sensor, a broken or chafed wire, and a corroded connector. Less common causes are a damaged toothed wheel, a failed ignition module on older cars and a fault in the engine control unit.
Why does my car start again after cooling down with P0322?
A sensor that is failing can lose its signal when it gets hot and recover once it cools. That pattern points at a heat-sensitive sensor or connection, not at a fuel problem.
How much does it cost to fix P0322?
Replacing the sensor costs roughly 20 to 100 EUR in parts plus 50 to 200 EUR labour. Wiring repairs are usually cheaper. A control unit repair is the most expensive case and should come only after the sensor and wiring are proven good.

Read our detailed guides

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