What does p0753 mean on a Chevrolet?
When the Powertrain Control Module (PCM) detects a continuous open, short to ground or short to power in the 1-2 SS valve circuit , then the P0753 is set. P0753 CHEVROLET Possible Symptoms. P0753 CHEVROLET Meaning. The 1-2 Shift Solenoid (SS) valve controls the fluid flow acting on the 1-2 and 3-4 shift valves.
When to replace a shift solenoid p0753 trouble code?
A common mistake made by mechanics when diagnosing a P0753 trouble code is to replace a shift solenoid because they believe it has caused the problem, when in actuality the problem lies somewhere else. How serious is the P0753 code?
What happens to the TPS when the throttle is closed?
The TPS sends the throttle position information back to the PCM on this signal wire. When the throttle is closed the signal is near .45 volts. At WOT (Wide Open Throttle) the TPS signal voltage will approach a full 5 volts. When the PCM sees a voltage that is higher than the normal upper limit, P0123 will set. other symptoms may also be present
When does a TPS sensor indicate a problem?
If the voltage spikes or is too high (over 4.65 volts with key on, engine off), then that is indicative of a problem. Carefully trace each wire from the TPS wiring harness to check for breaks, rubbing against other components, etc. Other TPS sensor and circuit related DTCs: P0120, P0121, P0122, P0123, P0124
When does a PCM set the p0753 code?
If the PCM is giving the 1-2 shift command and the vehicle does not properly shift from 1st to 2nd gear, then you will have verified a problem that could set the P0753 code. Next step is to start doing pinpoint tests i.e voltage drops and continuity tests of the shift solenoid.
What does the p0753 code on the Shift Solenoid mean?
The P0753 code is detected when the gear required by the ECM does not match the actual gear when vehicle is driven. Shift solenoid valve A is turned ON or OFF by the Transmission Control Module (TCM) in response to signals sent from the park/neutral position (PNP) switch, vehicle speed and Engine Control Module ( ECM) (throttle opening).
What are the symptoms of a p0753 trouble code?
Some common symptoms of a P0753 trouble code can range from a failure to shift into or out of gear to no detectable symptoms. Additional symptoms include the transmission control module entering Limp-in mode, slippage or overheating in the transmission, harsh shifting, and decreased fuel efficiency.
What does it mean when the code p0750 is set?
It does this by re-directing the flow of the transmission fluid which changes the position of the shift valves in the valve body. When the code P0750 is set in the Powertrain Computer, it means that the Powertrain Computer or PCM is not seeing the specified rpm change that occurs during a shift from 1st to 2nd gear.