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car starts sometimes then idles ok but weak power
sometimes when cranking - engine continues to crank when key is released until turned off - without starting
replaced camshaft sensor - without improvement - swapped sensor between both cams
Vehicle: 2009 Toyota Matrix 1.8L

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Hi there,

These codes indicate an issue with the camshaft position sensor A and B on bank 1. If replacing the sensor hasn't solved the issue, it's likely a problem with the wiring. Here is a list of other possible causes.

P0340 TOYOTA - Camshaft Position Sensor 'A' Circuit Bank 1

Read more: https://www.autocodes.com/p0340_toyota.html

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