2021 Lexus P0340: What It Means & Is It Safe to Drive?
P0340 on the 2021 Lexus: Camshaft Position Sensor Circuit Malfunction. Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
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What this code means
The PCM is not receiving a valid signal from the camshaft position sensor. Affects ignition timing and fuel injection.
Common causes on the 2021 Lexus
- Failed camshaft position sensor
- Wiring or connector issue
- Timing chain/belt misalignment (less common)
Symptoms
- Check Engine Light
- No start or hard start
- Rough run, stalling
- Reduced power
Typical fixes
- Replace camshaft position sensor
- Repair wiring/connector
- Verify timing if sensor replacement doesn't fix
Repair cost range
For a 2021 Lexus, repairs for P0340 typically fall between $100 and $500, depending on the root cause and labor rates in your area.
Known issues on Lexus
Lexus P0340 cam position sensor fault on the 2GR and 4GR engines is typically a simple sensor failure or connector corrosion. These engines have very robust timing chains and cam phaser systems. Clean the connector and test before replacing the sensor.
Most commonly affected models
IS250 4GR-FSE 2006–2015RX350 2GR-FE 2007–2015GS350 2GR-FSE 2007–2011