Dodge DTC P1597 – Speed Control Switch Always Low
DTC P1597 meaning on Dodge
DTC P1597 on a Dodge vehicle indicates that the Speed Control Switch input signal is consistently low. This means that the signal from the speed control switch is not within the expected range, causing the Powertrain Control Module (PCM) to set this diagnostic trouble code.
Dodge DTC P1597 symptoms
Symptoms of DTC P1597 on a Dodge may include:
- Speed control system not functioning
- Cruise control not engaging
- Check Engine Light illuminated
Dodge DTC P1597 causes
Common causes of DTC P1597 on a Dodge include:
- Defective speed control switch
- Wiring or connection issues in the speed control circuit
- Faulty PCM
Dodge DTC P1597 seriousness
While DTC P1597 may not cause drivability issues, it can affect the operation of the speed control system. It is important to address this code to ensure proper functioning of the cruise control feature.
How to diagnose DTC P1597 on Dodge
To diagnose DTC P1597 on a Dodge, 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
- Test the speed control switch for proper operation
- Check the speed control circuit for continuity and proper voltage
- Inspect the PCM for any signs of damage or malfunction
How to fix DTC P1597 on Dodge
To fix DTC P1597 on a Dodge, the following steps may be taken:
- Replace the speed control switch if found to be faulty
- Repair any damaged wiring or connections in the speed control circuit
- If the PCM is determined to be the issue, it may need to be replaced or reprogrammed
How to erase DTC P1597 on Dodge
To erase DTC P1597 on a Dodge, the code can be cleared using a scan tool that has the capability to reset diagnostic trouble codes. Once the issue has been addressed and fixed, the code can be cleared to turn off the Check Engine Light.
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