P0340 on Renault
Camshaft Position Sensor Circuit Malfunction
P0340 on Renault vehicles indicates camshaft position sensor circuit malfunction. Au7o has documented this code across 1 Renault model — most commonly on Koleos. This code means the engine computer lost or received an erratic signal from the camshaft position sensor. That sensor tells the computer the exact position and speed of the camshaft, which it uses together with the crankshaft sensor to time fuel injection and spark precisely. When the camshaft signal is missing, intermittent, or out of range, the computer sets P0340. Symptoms often include hard starting, stalling, rough running, or a no-start because the engine can't time itself correctly. Typical repair costs on Renault range from $600 to $3,000, depending on the specific model and root cause.
Common Causes of P0340
- •Failed camshaft position sensor
- •Corroded or loose sensor connector
- •Damaged or shorted sensor wiring
- •Bad reluctor/tone ring on the camshaft
- •Loose timing chain/belt or jumped timing
- •Metal debris or oil contamination on the sensor tip
- •Poor sensor power or ground supply
- •Faulty PCM/ECM (rare)
P0340 on Renault by Model
Renault Koleos(1 issue)
- 2.5 petrol (QR25DE/2TR) timing chain stretch and oil consumption2008-2015
The first-generation 2.5-litre petrol Koleos uses the Renault 2TR engine, essentially the Nissan QR25DE. After roughly 100,000-150,000 km many owners experience excessive oil consumption (worn piston rings) and timing chain stretch, often signalled by a rattle on cold start. Delayed oil changes or incorrect oil viscosity accelerate wear of the chain tensioner and guides.
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View P0340 across all makes →Frequently Asked Questions
What does P0340 mean on Renault?▼
P0340 stands for "Camshaft Position Sensor Circuit Malfunction." This code means the engine computer lost or received an erratic signal from the camshaft position sensor. That sensor tells the computer the exact position and speed of the camshaft, which it uses together with the crankshaft sensor to time fuel injection and spark precisely. When the camshaft signal is missing, intermittent, or out of range, the computer sets P0340. Symptoms often include hard starting, stalling, rough running, or a no-start because the engine can't time itself correctly. On Renault specifically, this code is documented across 1 model.
What causes P0340 on Renault vehicles?▼
Common causes on Renault: Failed camshaft position sensor, Corroded or loose sensor connector, Damaged or shorted sensor wiring, Bad reluctor/tone ring on the camshaft, Loose timing chain/belt or jumped timing. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0340 on a Renault?▼
Repair costs on Renault range from $600 to $3,000, depending on the specific model and root cause.
Which Renault models have P0340 documented?▼
Au7o has documented P0340 on 1 Renault model: Koleos.