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P0340 Fault Recurrence in 2005 Lincoln Aviator After Cam Position Sensor Replacement

Model: 2005 Lincoln Aviator Fault Code: P0340 Posted: 2019-02-09 12:52

I own a 2005 Lincoln Aviator with 175,000 miles. The vehicle has been displaying fault code P0340 and previously P1336. I replaced the camshaft position sensor and cleared the codes, but the P0340 code returned. After clearing the code, the engine will not start until the next ignition cycle—meaning it remains off for a period of time after initial startup. This behavior persists regardless of how long the vehicle is driven; the code only reappears when the engine is restarted. The P1336 code has not returned since the repair. I am seeking advice on possible causes and troubleshooting steps, especially given that the camshaft sensor was reportedly a single unit located on the left side behind the power steering reservoir.

Related fault codes
P0340
Comments (4)
Anonymous 2019-02-09 14:36

Could you specify which camshaft position sensor you replaced? Has the P1336 code reappeared after the replacement?

Anonymous 2019-02-09 15:27

The camshaft position sensor I replaced was a single unit, located on the left side behind the power steering reservoir. The seller confirmed this during purchase.

Anonymous 2019-02-09 16:15

For accurate diagnosis of P0340, follow the official troubleshooting procedure for this code as outlined in reliable automotive resources such as http://www.bbbind.com/free-tsb. Wiring diagrams are available there to assist with inspection. Possible causes include: a grounded, shorted, or broken wire/connector; a failed camshaft position sensor; a malfunctioning Powertrain Control Module (PCM); an open circuit; or a faulty crankshaft position sensor. For definitive testing, a lab-grade oscilloscope is recommended to verify the sensor output—this should show a clean AC sine wave signal on a two-wire setup.

Anonymous 2019-02-10 16:17

The camshaft position sensor has two wires: one for ground and one for signal. Faulty sensors or wiring issues are common, especially with new parts that may not meet specifications. A proper test using an oscilloscope is essential to confirm functionality—this will reveal whether the sensor produces a clean sine wave signal as expected.