Chrysler DTC P1597 – Speed Control Switch Always Low
DTC P1597 meaning on Chrysler
DTC P1597 for Chrysler indicates that the Speed Control Switch input signal is consistently low. This means that the vehicle’s powertrain control module (PCM) is receiving a signal from the speed control switch that is below the expected voltage range.
Chrysler DTC P1597 symptoms
Symptoms of DTC P1597 on a Chrysler vehicle may include:
- Speed control system not functioning
- Cruise control not engaging
- Check Engine Light illuminated
Chrysler DTC P1597 causes
Common causes of DTC P1597 on Chrysler vehicles include:
- Defective speed control switch
- Wiring or connection issues in the speed control switch circuit
- Faulty PCM
Chrysler DTC P1597 seriousness
While DTC P1597 may not cause immediate drivability issues, it can affect the functionality of the speed control system. It is recommended to address this issue to ensure proper operation of the cruise control feature.
How to diagnose DTC P1597 on Chrysler
To diagnose DTC P1597 on a Chrysler vehicle, a mechanic may perform the following steps:
- Use a scan tool to retrieve the DTC and freeze frame data
- Inspect the speed control switch and its wiring for any visible damage or corrosion
- Test the speed control switch for proper voltage output
- Check the PCM for any related trouble codes
How to fix DTC P1597 on Chrysler
To fix DTC P1597 on a Chrysler vehicle, the following steps may be taken:
- Replace the speed control switch if it is found to be faulty
- Repair any damaged wiring or connections in the speed control switch circuit
- If necessary, replace the PCM with a new unit
How to erase DTC P1597 on Chrysler
To erase DTC P1597 on a Chrysler vehicle, the code can be cleared using a scan tool that has the capability to reset fault codes. Once the repair has been completed, the code can be cleared to turn off the Check Engine Light.