What does the code P1870 mean?
Transmission Component Slippage
Diagnostic trouble code P1870 (Transmission Component Slippage) is a General Motors-specific code whose set parameters are determined by transmission type and engine size. The PCM monitors and compares engine speed to vehicle speed after the converter clutch has been commanded ON in either high gear or Overdrive.
What are the symptoms of a bad TCC?
Symptoms of Torque Converter Problems
- Slipping. A torque converter can slip out of gear or delay a shift its fin or bearing is damaged.
- Overheating.
- Contaminated Transmission Fluid.
- Shuddering.
- Increased Stall Speed.
- Unusual Sounds.
What does P0894 transmission component slipping mean?
Diagnostic trouble code (DTC) P0894 stands for “Transmission Component Slipping.” This code is logged when the powertrain control module (PCM) has received information from the input and output speed sensors that an internal transmission component is slipping.
What does it mean transmission component slipping?
When a transmission is said to be “slipping” , one or more of these devices is no longer holding. This often happens due to lack of hydraulic pressure inside the transmission. The holding devices are applied with hydraulic pressure. Solenoids are used to control this pressure.
How to know if your car has a p1870 code?
Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. The cost to diagnose the P1870 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.
What is the diagnostic code for GM transmission slippage?
Diagnostic trouble code P1870 (Transmission Component Slippage) is a General Motors-specific code whose set parameters are determined by transmission type and engine size.
What causes DTC 1870 on a GM 4L60?
This would explain why DTC 1870 is often accompanied by a complaint of a hard 1-2 upshift. When this code sets, it could have any number of causes, ranging from the sump running low of fluid to a malfunctioning torque converter. Take a GM 4L60-E transmission, for example.
What causes a GM 4L80-E transmission to fail?
Fortunately, experience has shown that in most cases, the cause can be traced to some form of converter clutch failure as a result of valve body concerns. With GM’s 4L80-E transmission, this code has usually been the result of a cracked converter clutch piston.