Powertrain, generic (extended)

P2353 Cylinder 10 Pressure Sensor Circuit Range/Performance

Check engine lightOn

EmissionsRelevant

Drive cycleRequired

Limp modeNo

P2353 means the cylinder 10 pressure sensor delivers a signal that is electrically within limits but not believable for the current operating point – the reading is skewed, not cut off. CARB expects input sensors to be checked for such rationality faults, not just for open or shorted circuits. How an ECM can do this is visible in Saab's 9-5 diesel: it locates top dead centre from the pressure peak on overrun, corrects the offset of the crank trigger wheel and keeps the result in EEPROM. A drifted sensor, a heater rod that no longer passes pressure on to the measuring diaphragm, or a replacement plug whose calibration does not suit the engine would all fail such a test. No manufacturer documents P2353 for cylinder 10. The engine runs normally; only pressure-based control of this cylinder is lost.

Likely causes

Sensor offset drifted with age and heat

Carbon on the heater rod hampers pressure transfer to the diaphragm

Replacement glow plug with calibration for another engine

Symptoms

Check engine light on
No noticeable change in engine behaviour

Repair estimate

DifficultyMediumWorkshop job

Parts and labour€80–500

Time0.5–3.5 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: law.cornell.edu, saabwisonline.com, borgwarner.com.