When is the p0748 Chevrolet code detected?
When is the P0748 CHEVROLET code detected? When the Powertrain Control Module (PCM) detects a continuous open or short in the Pressure Control (PC) solenoid valve circuit the P0748 code is set.
What does p0748 stand for on a PCM?
When the Powertrain Control Module (PCM) detects a continuous open or short in the Pressure Control (PC) solenoid valve circuit the P0748 code is set. The Pressure Control (PC) solenoid valve is an electronic device that regulates transmission line pressure based on the current flow through its coil winding.
Can a fuel pump cause a no start condition?
CASE 1: If your fuel pressure gauge read 50 PSI or more as the engine cranked. This means that the fuel pump on your 4.3L, 5.0L, or 5.7L is OK and not the cause of your No Start Condition. The next step is to observe the fuel pressure gauge’s needle (after your helper stopped cranking the engine).
How to check no fuel condition on GM 4.3L?
I’ve also included how to check a no fuel condition with starting fluid (although this is not the most effective way to test the fuel pump). It’s been my experience that misdiagnosing a bad fuel pump is a common occurrence on the 4.3L, 5.0L, 5.7L GM vehicles with the ‘Spider’ fuel injector assembly.
How much does it cost to repair a p0748 Chevy?
The cost to diagnose the P0748 CHEVROLET code is 1.0 hour of labor. The auto repair’s diagnosis time and labor rates vary by location, vehicle’s make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
What are the possible causes of a p0758 Chevrolet?
P0758 Chevrolet Possible Causes. Low transmission fluid level. Dirty transmission fluid. Faulty 2-3 Shift Solenoid Valve. 2-3 Shift Solenoid Valve harness or connectors. 2-3 Shift Solenoid Valve circuit is open or shorted.
When the Powertrain Control Module (PCM) detects a continuous open or short in the Pressure Control (PC) solenoid valve circuit the P0748 code is set. The Pressure Control (PC) solenoid valve is an electronic device that regulates transmission line pressure based on the current flow through its coil winding.
I’ve also included how to check a no fuel condition with starting fluid (although this is not the most effective way to test the fuel pump). It’s been my experience that misdiagnosing a bad fuel pump is a common occurrence on the 4.3L, 5.0L, 5.7L GM vehicles with the ‘Spider’ fuel injector assembly.
What causes an error on a pressure control solenoid?
The pressure control solenoid electrical may set an error if any of the following conditions exist: Contaminated or dirty transmission fluid. Low transmission fluid. Hydraulic clogs inside the transmission fluid passageways. A bad electronic pressure control solenoid.
How does the PCM control the solenoid valve?
The magnetic field produced by the coil moves the solenoid’s internal valve which varies pressure to the pressure regulator valve. The Powertrain Control Module ( PCM) controls the PC solenoid valve by applying a varying amount of amperage to the solenoid.
When is the P0748 CHEVROLET code detected? When the Powertrain Control Module (PCM) detects a continuous open or short in the Pressure Control (PC) solenoid valve circuit the P0748 code is set.
What’s the diagnostic code for pressure control solenoid electrical?
P0748 is a diagnostic trouble code (DTC) for “Pressure Control Solenoid Electrical”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic.
What causes a transmission code of p0758 to be issued?
Causes for this P0758 transmission code may include: Insufficient fluid level. Dirty or contaminated fluid. Dirty or clogged transmission filter. Defective transmission valve body. Restricted hydraulic passages.