P0342 — Camshaft Position Sensor Circuit Low Input
Drive with caution — fix soon.
What P0342 means
This code is set when the engine computer detects a lower-than-normal voltage on the camshaft position sensor circuit. It usually points to a short to ground, damaged wiring, a bad connector, or a failing sensor. Repairs commonly involve inspecting and fixing the wiring or replacing the camshaft position sensor.
Common symptoms
- Check engine light is on
- Hard starting or extended cranking
- Rough idle or stalling
- Engine hesitation or loss of power
- Reduced fuel economy
Common causes
- Faulty camshaft position sensor
- Short to ground in the sensor wiring
- Corroded or loose sensor connector
- Damaged wiring harness
- Poor sensor power or ground supply
Typical repair cost
$110 – $400
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0342 code?
Short trips are usually fine, but don't make it a habit. The engine may run poorly or stall, so it's safest to get it checked before it leaves you stranded.
How much does it cost to fix a P0342 code?
Typical repairs run about $110 to $400. Replacing the sensor is the cheaper fix, while tracing and repairing a wiring short can add labor cost.
Is a P0342 code serious?
It's moderate. It won't usually cause immediate damage, but the camshaft signal is important for timing, so it should be repaired before drivability worsens.
What causes the low voltage reading in a P0342 code?
It's commonly a short to ground or a damaged wire pulling the circuit voltage down, though a failing sensor or corroded connector can also be the culprit.