Engine Control Module (ECM) Fuel Delivery Pressure Sensor Circuit
Issues detected in the fuel delivery pressure sensor circuit in the ECM.
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What it means (plain English)
The engine control module (ECM) detects a problem with the sensor that measures fuel pressure, which could cause performance issues.
What the computer is actually seeing
The ECM monitors the fuel pressure sensor signal, which should be around 0.5 to 4.5 volts depending on engine load and conditions. Abnormal readings trigger this code.
What a healthy reading looks like
Fuel pressure sensor output should be between 0.5V (low pressure) to 4.5V (high pressure).
Guided diagnostic — the DiagCoach way
Don't just throw parts at it. Walk through these in order — each step tells you whether to keep going or stop and fix what you found.
- 1Inspect wiring and connectors for the fuel pressure sensor for damage or corrosion. Clean or repair as needed. Decision point: Are wiring and connectors in good condition? If yes, proceed to step 2; if no, fix the issue.
Common causes
- Damaged wiring or connectors in the fuel pressure sensor circuit
- Faulty fuel pressure sensor
- ECM software issues
- Blocked fuel filter
- Fuel pump problems
Typical repair cost
$$$
Related codes
Frequently asked questions
Is it safe to drive with this code?
It’s drivable but performance may be affected. Recommended to fix soon.
Will this code come back after clearing it?
If the underlying issue isn't repaired, it will likely return.
Why does this code pair with SPN 1368?
SPN 1368 is often related to similar sensor circuit issues, indicating related faults.
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