Powertrain, generic (extended)

P2367 Cylinder 12 Pressure Sensor Circuit Range/Performance

Check engine lightOn

EmissionsRelevant

Drive cycleRequired

Limp modeNo

With P2367 the cylinder 12 pressure signal is electrically within its limits but makes no sense for the operating point. A natural yardstick is the motored cycle: on overrun nothing burns, so the curve has to peak at top dead centre. Saab's 9-5 diesel uses exactly this peak position to locate true TDC and keeps in EEPROM how far the crank trigger wheel sits off its nominal angle – which shows how closely the ECM follows each sensor. A sensor whose peak shifts, whose zero has drifted or whose seat lets gas escape would fail such a check. No manufacturer documents P2367, because no twelve-cylinder engine with this sensor is public; the cylinder-1 equivalent is P0396. In most cases only the warning lamp is noticed.

Likely causes

Sensor zero point or gain drifted

Combustion gas escaping at the glow plug seat

Glow plug of a different calibration fitted

Symptoms

Check engine light on
Implausible peak pressure value for cylinder 12 compared with the others

Repair estimate

DifficultyMediumWorkshop job

Parts and labour€80–600

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, borgwarner.com.