Fault code P0897 is called “Transmission Fluid Deteriorated” but in different programs it may be called differently. This fault designation applies to all vehicles equipped with OBD-II.
Technical description and explained code P0897
This diagnostic trouble code (DTC) is a generic transmission code. Error P0897 is considered a general code because it applies to all makes and models of vehicles. Although the specific repair steps may vary slightly depending on the model.
Many vehicles have an automatic transmission control module called a transmission control module (TCM). The Powertrain Control Module (PCM) communicates with the TCM. To monitor the automatic transmission for malfunctions.
If your vehicle retains code P0897, it means that the transmission control module (PCM) has detected transmission fluid deterioration. Therefore, the transmission control system (TCS) has identified a problem which requires the malfunction indicator lamp (MIL) to turn on.
Note that code settings may vary depending on the make and model of vehicle, so it is recommended that you consult your vehicle’s owner’s manual for specific information.
P0897 is an information code only. Which does not indicate a direct transmission problem, but only a general malfunction. Additional diagnostics are needed to determine the exact picture. This requires a diagnostic scanner that will communicate with the transmission module.
Symptoms of vehicle malfunctions
The main signal that an error P0897 has occurred is the Malfunction Indicator Lamp (MIL) is also known as the CheckEngine Light.
It can also be warning signs such as:
- The “Check engine” control lamp on the control panel will light up (the code will be stored as a fault).
- It may be difficult to shift gears while driving.
- Unstable or abrupt shifting of gears.
- Takes a long time to change gear.
- Increased fuel consumption.
- Transmission overheating.
- Transmission may be placed in emergency mode.
- There may be no symptoms other than a stored fault code.
A stored code P0897 indicates that a potentially serious fault has been detected. The conditions that contributed to the stored code should be corrected as soon as possible.
Factors that can cause this error code
The error code P0897 can mean that one or more of the following problems have occurred:
- Contamination of transmission fluid.
- Low level of transmission fluid.
- Damaged or defective shift solenoid valves.
- Clogged transmission fluid passages.
- Sometimes the cause is a faulty PCM module.
How to fix or reset OBD-2 code P0897
Some suggested steps for troubleshooting and fix the error code P0897:
- Check the quality and level of the transmission fluid.
- Inspect the transmission pan for debris and other foreign matter.
- Visually inspect for shorted or burned wires.
- Replace damaged wires if necessary.
- Check for transmission fluid leaks.
- Check transmission fluid pump pressure.
- Test the reference voltage and ground signal of the shift solenoid valves.
After completing all the above steps, remove error code DTC P0897 with a scan tool. After that, it is worth to test-drive and check if the error will come back.
Diagnose and repair of problems
The first thing to do when diagnosing a P0897 fault is to check the electrical part for damage. In today’s vehicles, electrical and electronic signals require good cabling for proper data transmission. Any malfunctions, such as breaks, disconnected connectors, or corrosion, can interrupt signals, leading to transmission control failures.
Check the battery pack, as some PCM and TCM modules are sensitive to low voltage. If the battery is low, the system may detect this as a failure. Make sure the battery is delivering a minimum of 12 volts and that the alternator is running properly, a minimum of 13 volts at idle.
Low or contaminated ATF fluid can result in no pressure in the box, which can also be a problem that the TCM detects as a failure. Fuses should not be overlooked either, as a blown fuse is a common problem.
On which vehicles does this problem occur most frequently
Fault code P0897 can occur on different vehicles but there are statistics on which brands this occurs most often. Here is a list of some of them:
- Cadillac (CTS, SRX)
- Chevrolet (Camaro)
Fault code P0897 can sometimes be found with other errors. The most common are the following: P0802, P0898, P0899.
