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I am getting code c1201 and trac control vsc light is on

Customer Question
I am getting code c1201 and trac control vsc light is on
Submitted: 1 year ago.Category: Toyota
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Answered in 9 minutes by:
9/21/2016
Toyota Mechanic: Jared D, ASE Certified Technician replied 1 year ago
Jared D
Jared D, ASE Certified Technician
Category: Toyota
Satisfied Customers: 2,053
Experience: Shop Supervisor at County Fleet
Verified

The C1201 is really just a code saying that the vehicle has detected a fault and requested illumination of the VSC light. That code alone doesn't tell much.

By chance are there any other codes stored? Any other symptoms?

What is the model? All that came through was 2005, but no model. Tundra? Sequoia?

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Customer reply replied 1 year ago
2005 toyota 4 runner also code cylinder 2 misfire
Toyota Mechanic: Jared D, ASE Certified Technician replied 1 year ago

Ok, so the real problem is the p0302-cylinder 2 misfire code. The c1201 is just pointing to the c1201.

To diagnose an individual cylinder misfire the first thing to do is try swapping the ignition coil from that cylinder to another cylinder and see if the misfire follows the coil. In other words, swap the ignition coil from cylinder 2 to cylinder 4 (or any other cylinder). Clear the check engine codes and then monitor the misfire data. If the misfire code jumps to p0304 (of whichever cylinder you swapped the #2 coil to) then you know the coil is the problem and will need to be replaced.

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Toyota Mechanic: Jared D, ASE Certified Technician replied 1 year ago

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