Chrysler DTC P1290 – CNG Fuel Pressure Too High
DTC P1290 meaning on Chrysler
DTC P1290 on a Chrysler indicates that the Compressed Natural Gas (CNG) fuel pressure is too high. This diagnostic trouble code is specific to vehicles equipped with CNG fuel systems.
Chrysler DTC P1290 symptoms
Symptoms of DTC P1290 on a Chrysler may include:
- Check Engine Light illuminated
- Engine running rough
- Decreased fuel efficiency
Chrysler DTC P1290 causes
Common causes of DTC P1290 on a Chrysler include:
- Faulty CNG fuel pressure regulator
- Issues with the CNG fuel pressure sensor
- Restricted fuel lines
Chrysler DTC P1290 seriousness
DTC P1290 should be addressed promptly as it can lead to drivability issues and potential damage to the CNG fuel system components.
How to diagnose DTC P1290 on Chrysler
To diagnose DTC P1290 on a Chrysler, a mechanic may perform the following steps:
- Use a scan tool to retrieve the DTC and freeze frame data
- Inspect the CNG fuel pressure regulator and sensor for proper operation
- Check for any restrictions in the fuel lines
How to fix DTC P1290 on Chrysler
To fix DTC P1290 on a Chrysler, the following steps may be taken:
- Replace the faulty CNG fuel pressure regulator or sensor
- Clean or replace any restricted fuel lines
- Clear the DTC and test drive the vehicle to ensure the issue is resolved
How to erase DTC P1290 on Chrysler
To erase DTC P1290 on a Chrysler, a scan tool can be used to clear the code from the vehicle’s computer. Once the repair has been completed, the code can be cleared to reset the Check Engine Light.
Recommended tools for Chrysler diagnostics
Explore our expert picks: The Best OBD2 Scanners for 2025
Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter
Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.