U355D

Expander Inlet Pressure Sensor 1 Circuit

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$17–67 (est.)

Symptoms

Check Engine light comes on
Engine power drop
Unstable operation at idle
Increased fuel consumption
Dips during acceleration

Causes

Open or short circuit in the sensor circuit
Malfunction of inlet pressure sensor
Oxidation of contacts in the sensor connector
Wiring Harness Problems
ECU malfunction (rare)

How to Fix

Check the integrity of the sensor wiring
Clean the contacts of the sensor connector
Check the sensor resistance (compare with reference values)
Replace pressure sensor if necessary
Scan the system for other fault codes

Related codes