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P0336 is a performance code, not a full circuit failure. The sensor is working but its signal is erratic. This often means the sensor is about to fail completely. Drive to a shop now - intermittent CKP faults can cause sudden stalling at highway speed. See top-rated scanners on Amazon ↗
🗺️ Where Is the Problem?
Blueprint view - P0336 crankshaft position sensor erratic signal (sensor or tone ring)
These are statistical causes across ALL vehicles - your exact car may rank differently
For example, on a Honda 4-cyl the downstream O2 sensor causes P0336 64% of the time, but on a GM 5.3L V8 the catalytic converter is the cause 71% of the time. Get a probability ranking built specifically for your year, make, model, and mileage.
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🎯 Top Causes & Probability
55%
#1 - Most Likely
Failing CKP Sensor (Intermittent Signal)
The sensor is still producing a signal, but it drops out or produces erratic pulses under heat or vibration. Common on high-mileage vehicles. The failure is often worse when the engine is hot. Heat-soak testing (checking after the engine is warm) can confirm.
🔩 Part
$30–$120
👨🔧 Labor
$50–$150
⚡ DIY Difficulty
Easy–Medium
20%
#2 - Check First
Damaged Reluctor / Tone Ring
The crankshaft tone ring (reluctor wheel) has a damaged, bent, or missing tooth. Even one missing tooth creates a pattern gap that the PCM detects. Inspect the ring with a flashlight if the sensor is in an accessible location.
🔩 Part
$50–$300
👨🔧 Labor
$200–$600
⚡ DIY Difficulty
Hard
15%
#3 - Less Common
Wiring / Connector Intermittent Fault
The CKP sensor connector is exposed to heat, oil, and vibration. A loose or corroded connection creates the same intermittent signal drop as a failing sensor. Wiggle test the connector with the engine running.
🔩 Part
$5–$30
👨🔧 Labor
$40–$100
⚡ DIY Difficulty
Easy
10%
#4 -
CKP Sensor Air Gap Too Large
If the sensor has been recently replaced or the engine has been rebuilt, an incorrect air gap between the sensor tip and tone ring can cause weak or missed pulses. The gap is typically 0.020–0.050 inches.
🔩 Part
$0–$10
👨🔧 Labor
$30–$80
⚡ DIY Difficulty
Easy
🚗 Most Affected Vehicles
🔧 Step-by-Step Diagnosis
- Check CKP Sensor Connector - Wiggle the sensor connector with the engine running at idle. If the engine stumbles or stalls, the connector or wiring is the cause. Repair or replace the connector.
- Inspect Sensor Mounting and Air Gap - Verify the sensor is fully seated and the mounting bolt is tight. If it is adjustable, check the air gap. Any gap outside 0.020–0.050 inches can cause erratic signals.
📍 Find a Trusted Shop Near You
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Tips for Choosing a Shop
- Ask if they charge a diagnostic fee and whether it applies toward the repair
- Request a written estimate before approving any work
- Ask specifically about the part brand - OEM vs. aftermarket matters for this code
- Check Google reviews for recent mentions of the specific repair you need