Powertrain, generic (extended)

P2360 Cylinder 11 Pressure Sensor Circuit Intermittent/Erratic

Check engine lightOn

EmissionsRelevant

Drive cycleRequired

Limp modeNo

P2360 records a cylinder 11 combustion pressure signal that is unsteady – brief dropouts or spikes that do not last long enough for a low or high code. Since only twelve-cylinder engines have cylinder 11, and none is documented with pressure sensors, the code has no public manufacturer description. Saab's 9-5 diesel shows how quickly such a monitor acts: the erratic code for cylinder 1, P0399, is a Type B code that needs only a 0.2 s excursion beyond the permitted band with the engine turning. Contact problems dominate – a connector not fully latched, fretting corrosion on the terminals, a harness touching hot parts. Electronics in the plug head that only drop out once the engine is warm are another candidate. The fault often vanishes and returns days later.

Likely causes

Fretting corrosion or loose fit at the connector terminals

Harness touching hot engine parts

Sensor electronics in the plug head failing when warm

Symptoms

Check engine light that comes and goes
Fault stored without a lasting complaint

Repair estimate

DifficultyMediumWorkshop job

Parts and labour€40–500

Time0.5–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

cylinder pressure sensor glow plugsensor wiringengine control module

References: saabwisonline.com, law.cornell.edu.