P1209
Injection Control System Pressure Peak Fault
Severity
⚠️ MediumCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$17–89 (est.)
Symptoms
- Unstable engine operation
- Increased fuel consumption
- Problems starting the engine
- Power Loss
- Check Engine Light Is On
Causes
- Malfunction of fuel injectors
- Problems with the fuel pump
- Fuel filter dirty
- Fuel pressure sensor malfunction
- Electrical wiring problems
How to Fix
- Check the pressure in the fuel system
- Diagnose the condition of injectors
- Replace the fuel filter if necessary
- Check fuel pressure sensor
- Inspect the wiring harness for damage