P018A
Fuel Pressure Sensor B Circuit
Generic electrical fault on fuel pressure sensor B (second sensor, e.g. low-pressure side or alternative fuel system).
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: medium
Symptoms
- Check engine light on
- Hard start, no start, or stalling under load
- Power loss especially at high load or rpm
- Possible long cranking time
Common causes
Ordered by how often each turns out to be the cause.
- Sensor failedCommon
Parts involved
- Fuel Pressure Sensor B
- Sensor Wiring
P018A is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.