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Example: P0120
P3749 Chevrolet Astro engine code seems a kind of powertrain problem, we try to show one by one the meaning and the solution.
Brief explanation of the P3749 Chevrolet Astro code and definition of P3749 Chevrolet Astro is the bottom side.
| p |
Powertrain Code Problem is related engine, transmission and emissions systems. |
| 3 | SAE - Generic |
| 7 | Auxiliary Emission Controls |
| 4 | BBV Sensor Circuit Low Voltage |
| 9 | Kick-Down Switch Failed Short |
SAE - Generic codes, which have a '0' as their second digit to indicate they are common to all makes and models of vehicles. These are the codes that are required for basic emissions fault diagnosis.
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How To Fix P3749 Chevrolet Astro ?
Regarding the P3749 code, it would probably be worthwhile to carefully inspect the wire harness near the intake manifold bracket. This is done most easily from below the car in the area near the oil filter. |
Deactivation of cylinders is achieved by releasing a synchroniser pin that normally interlocks the cam follower and rocker arms. P3749 code resolves the synchroniser pin is released using hydraulic pressure which is controlled by a dedicated solenoid. When you see P3749 Chevrolet Astro engine fault code on your engine code reader this description will help you.
| P Codes | List of all Powertrain codes. |
Final Step: In the definitions listed below, there is a test drive recommended after you've completed any repairs to see if the condition is fixed. Before you take a test drive after a repair, always erase the P Code(s) first. This will turn the check engine light off and then you will know if the check engine light returns, you've got further diagnostics to complete.
BE CAREFUL !
This engine code information is presented for information purposes only. This is not intended as repair advice and we are not responsible for any actions you take on any vehicle.
