P0340 on Saturn
Camshaft Position Sensor Circuit Malfunction
P0340 on Saturn vehicles indicates camshaft position sensor circuit malfunction. Au7o has documented this code across 1 Saturn model — most commonly on Vue. 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 Saturn range from $600 to $1,500, 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 Saturn by Model
Saturn Vue(1 issue)
- Vue 3.5L Honda V6 Timing Belt Service Interval2004-2007
2004-2007 Saturn Vue V6 used the Honda 3.5L J35 V6 (sourced from Honda) — same engine as the Honda Pilot/Odyssey/MDX. It uses a timing belt with a recommended replacement interval of 100,000 miles (or 7 years). Interference engine: failure to replace the belt risks catastrophic valve damage. Water pump should be replaced at the same time.
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View P0340 across all makes →Frequently Asked Questions
What does P0340 mean on Saturn?▼
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 Saturn specifically, this code is documented across 1 model.
What causes P0340 on Saturn vehicles?▼
Common causes on Saturn: 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 Saturn?▼
Repair costs on Saturn range from $600 to $1,500, depending on the specific model and root cause.
Which Saturn models have P0340 documented?▼
Au7o has documented P0340 on 1 Saturn model: Vue.