P0343 on Volkswagen: Causes, Symptoms and Fix Cost
Quick Answer
Not safe to drive
P0343 on a Volkswagen means the camshaft position sensor signal voltage is higher than the ECU expects. This usually happens when the signal wire is open (broken), the sensor coil has failed open, the connector has lost contact, or the signal wire has shorted to a 12 V power source. P0343 is the inverse of P0342 and points to wiring or sensor faults rather than mechanical timing problems.
- Severity
- Moderate · Ignition
- Typical repair cost, all makes
- €25-€350
Connect a standard OBD2 adapter (Bluetooth LE on iPhone) to your Volkswagen and Skanyx tells you what P0343 means on that engine, whether it is safe to keep driving, and what the fix should cost. Free on iPhone and Android.
Get Skanyx freeWhat does P0343 mean on a Volkswagen?
The Quick Answer above is the generic definition. What follows is the model-specific detail for the Volkswagen models that log P0343.
Volkswagen Golf
2008-2024
EA888 in Mk6 and Mk7 Golf commonly logs P0343 when the cam sensor wiring breaks where it enters the connector body. The harness flexes with engine movement and copper strands fatigue right at the crimp. A new sensor with a fresh pigtail is more durable than just splicing the broken wire.
What causes P0343 on a Volkswagen?
Beyond the generic causes listed on the main P0343 page, these are the patterns noted for Volkswagen models:
Wire fatigue at the cam sensor pigtail on EA888
: Volkswagen Golf
Sensor open coil after heat soak
: Volkswagen Golf
How to diagnose P0343 on a Volkswagen with OBD2
- Read freeze-frame data and confirm whether P0343 sets at cranking, at idle, or only after warm-up. Heat-soak-only failures often indicate a degrading sensor
- Inspect the sensor connector for full seating and signs of oil or coolant intrusion
- Unplug the sensor and check resistance across its terminals if magnetic, or verify 5 V reference and ground if Hall-effect. An infinite resistance reading confirms an open coil
- Check continuity of the signal wire from the sensor connector to the ECU pin. An open in the wire produces P0343 even with a healthy sensor
- With ignition on and sensor unplugged, measure voltage on each pin. A constant 12 V reading on the signal pin indicates a wire shorted to power
How much does P0343 cost to fix on a Volkswagen? (EUR)
Estimated repair costs for P0343 in EUR, compiled across makes. Expect Volkswagen parts and labour towards the upper end of each range.
| Repair | Parts Cost | Labor Cost | Total Estimate | DIY Difficulty |
|---|---|---|---|---|
| Reseat or replace sensor connector | €5–€30 | €20–€80 | €25–€110 | Easy |
| Replace camshaft position sensor | €30–€150 | €40–€200 | €70–€350 | Moderate |
| Repair wiring harness to camshaft sensor | €10–€50 | €60–€200 | €70–€250 | Moderate |
Prices estimated as of October 2026. Costs vary by region, vehicle, and shop.
Codes related to P0343
These codes are often seen alongside P0343 or point to related issues, on any make:
Looking for the full P0343 reference (all makes, full diagnosis flow, complete repair cost matrix)? See the main P0343 guide