What does code P0340 mean on a Lexus and is it safe to drive?
P0340: Camshaft Position Sensor Circuit Malfunction. Here's what it means on your Lexus, what usually causes it, what repairs typically cost, and how safe it is 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 for your 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 Lexus, repairs for P0340 often fall between $100 and $500, depending on the cause and whether you use OEM or aftermarket parts. Labor rates vary by location.
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