Chevrolet Touring P2516 Code:

OBD-II Diagnostic Powertrain (P) Trouble Code

Trouble In Chevrolet Touring P2516 Possible Cause

The most common causes of Chevrolet Touring P2516 code being stored are due to a defective intermediate shaft speed sensor, output speed sensor, or input speed sensor.

Common Symptoms For Chevrolet Touring P2516

  1. Most applications will require replacement of the full internal transmission harness if discrepancies are noted
  2. If the resistance level does not decrease with heat and increase as it cools, replace the sensor. If everything has checked out thus far, turn the key to the "ON" position and test for the presence of a voltage (and a ground signal) at the exhaust gas temperature/pressure (or heated oxygen) sensor electrical connector
  3. The PCM will read the sensor resistance and pass it
  4. If the fuel shutoff switch and all system circuitry checks out, suspect a defective PCM (or other related controller)

Similar Problems

Transmission
Vehicle Speed Output Circuit
Cruise Inhibit Control Circuit

Chevrolet Touring P2516 Troubleshooting

If this is the case with the code, you will be hearing very loud noises, like explosions, from the rear of the vehicle upon acceleration. Firstly check the carburetor to ensure that the fuel and air combination are properly balanced. If these settings are correct, then thoroughly inspect the distributor cap for any cracks or hairline splits, as this can produce a backfire. Move on to the spark plugs and ensure that they are clean and undamaged and inspect the engine gaskets for any sign of damage, as they are responsible for ensuring the correct gas exchange within the engine. Chevrolet Touring P2516 OBD2 specifically refers to the camshaft (cam) timing. In this case, if the cam timing is over-retarded, the engine light will be illluminated and the code will be set.

How to turn off Chevrolet Touring P2516 check engine light ?

There are two ways to turn off the check engine light:

A repair technician can do so once repairs have been made.
The OBD II can automatically turn it off when it fails to detect the problem after several diagnostic cycles.

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