What does code P0218 mean?

When an OBD-II equipped vehicle returns a P0218, it means the transmission fluid temperature detected by the powertrain control module has exceeded the allowable limit (typically 290 degrees fahrenheit) for an extended period of time.

What causes transmission over temp?

An overheated transmission can often go unnoticed until it’s too late and something breaks. The most common causes of overheating include solenoid problems, fluid leaks, low fluid levels and burnt/old fluid.

What does transmission fluid pressure low mean?

If the fluid is low, it should be assumed that there is a leak in the system, and the mechanic should begin searching for where the leak is coming from. If the transmission fluid level is normal, the mechanic should check to see if the transmission temperature sensors are faulty.

What is a transmission temperature sensor?

Description. Thermometrics Transmission Fluid Temperature Sensor (TFT) measures the temperature of transmission fluid. It provides input to the control module to modify shift patterns for smoother shifting in automatic transmissions, and also provides over-temperature protection by locking the torque convertor.

What causes a p0128 code on GM?

P0128 Causes: GMC Envoy. Fixing P0128 is usually a pretty easy thing to do, since 90% of the time it’s going to be the thermostat that is throwing the code. Here are the most common causes of P0128: Thermostat Stuck Open- Far and away, the most typical cause for the P0128 code is going to be a thermostat that is stuck open. When a thermostat is stuck open, it allows coolant to flow through the engine at all times.

What does p0128 code mean?

P0128 is a diagnostic trouble code (DTC) for “Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)”.

What is p0128 code on GMC?

P0128 is a relatively common OBDII trouble code. It is triggered when your GMC Envoy ‘s coolant temperature fails to reach the proper operating temperature. It’s a generic powertrain code, which means that regardless of who manufactured the vehicle, it’ll have the same meaning (1996+).

What is code p0410 in GMC Envoy?

the only symptom of P0410 in the Envoy is going to be the service engine soon light.