DTC P1340: Camshaft Position Sensor "A" (Bank 1 Sensor 2); DTC P1342: Camshaft Position Sensor "A" Low Input (MRE); DTC P1343: Camshaft Position Sensor "A" High Input (MRE) [08/2015 - 08/2017]: Description
WARNING: This page is about a different car, the 2018 Toyota Sequoia, 2017 Toyota Sequoia, and 2016 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
The camshaft position sensor (G signal) consists of a magnet and MRE (Magnetic Resistance Element).
The camshaft drive gear (LH) has 3 teeth on its inner circumference. When the camshaft gear rotates, air gap changes between the protrusion on the teeth and MRE. The change affects the magnetic field and results in changes in the resistance of the MRE.
The crankshaft position sensor plate has 34 teeth and is installed to the rear end of the crankshaft. The crankshaft position sensor generates 34 signals for every crankshaft revolution. The ECM detects the standard crankshaft angle based on the G signal, and the actual crankshaft angle and engine speed by the NE signal.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| P1340 | No camshaft position sensor signal to ECM during cranking (2 trip detection logic) |
|
| No camshaft position sensor signal to ECM with engine speed 600 RPM or more | ||
| P1342 | Output voltage of camshaft position sensor less than 0.3 V for 4 seconds (1 trip detection logic) |
|
| P1343 | Output voltage of camshaft position sensor more than 4.7 V for 4 seconds (1 trip detection logic) |