Lexus Error Code P0339: How to Fix It

Medium 1-2 hours High Severity Verified June 2026
Error Code
P0339
Brand
Lexus
Product Type
automotive
Severity
High
DIY Difficulty
Medium
Estimated Fix Time
1-2 hours
Error code P0339 in your Lexus indicates an intermittent problem with the crankshaft position sensor A circuit. This sensor is critical for engine timing and when it malfunctions, it can cause rough idling, stalling, or prevent your engine from starting. The intermittent nature means the connection or sensor is failing sporadically, making diagnosis more challenging.
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Tools You'll Need

How to Fix Error Code P0339

  1. Check for Related Error Codes

    Ensure the engine is off and ignition key is removed before connecting the OBD2 scanner.
  2. Locate the Crankshaft Position Sensor

    Allow the engine to cool completely before working near the crankshaft area to avoid burns.
  3. Inspect Wiring and Connector

  4. Test Sensor Resistance

    Ensure the multimeter is set to the correct ohm range before testing.
  5. Check Sensor Gap and Mounting

    Do not use abrasive materials on the sensor tip as this can damage the magnetic pickup.
  6. Replace Crankshaft Position Sensor

    Apply anti-seize compound sparingly to avoid contamination of the sensor tip.
  7. Clear Codes and Test Drive

Parts You May Need

Crankshaft position sensor
Check Price on Amazon
Anti-seize compound
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Electrical contact cleaner
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Crankshaft position sensor
Check Price on Amazon
Anti-seize compound
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
Crankshaft position sensor
Check Price on Amazon
Anti-seize compound
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
Crankshaft position sensor
Check Price on Amazon
Anti-seize compound
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
Crankshaft position sensor
Check Price on Amazon
Anti-seize compound
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
Crankshaft position sensor
Check Price on Amazon
Anti-seize compound
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
Crankshaft position sensor
Check Price on Amazon
Anti-seize compound
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
Crankshaft position sensor
Check Price on Amazon
Anti-seize compound
Check Price on Amazon
Electrical contact cleaner
Check Price on Amazon
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When to Call a Professional

Call a professional mechanic if the error code persists after replacing the sensor and checking wiring, as this may indicate timing chain problems, engine mechanical issues, or ECM problems that require specialized diagnostic equipment and expertise.

Frequently Asked Questions

Can I drive my Lexus with P0339 error code?
You should avoid driving with P0339 as it can cause sudden stalling, rough running, or prevent the engine from starting. The intermittent nature makes it unpredictable and potentially dangerous.
What causes P0339 code in Lexus vehicles?
P0339 is typically caused by a failing crankshaft position sensor, damaged wiring harness, corroded electrical connections, or occasionally timing chain stretch that affects sensor readings.
How much does it cost to fix P0339 on a Lexus?
The repair cost ranges from $150-400 for a crankshaft position sensor replacement at a shop, or $50-100 if you do it yourself. Costs may be higher if wiring repairs or timing chain issues are involved.
Will P0339 cause my Lexus to fail emissions testing?
Yes, P0339 will likely cause your vehicle to fail emissions testing as it indicates a malfunction in a critical engine management system that affects combustion timing and efficiency.
How often do crankshaft position sensors fail in Lexus vehicles?
Crankshaft position sensors in Lexus vehicles typically last 80,000-150,000 miles. Failure rates increase with age, exposure to heat, and oil contamination around the sensor area.