Code Definition

P047E — Exhaust pressure sensor signal intermittent sensor 2

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P047E

P047E is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P047E is stored, the module has detected a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P047E is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The fault code P047E is set when the Engine Control Module (ECM) detects an intermittent signal from the second exhaust pressure sensor. This condition means that the sensor's signal to the ECM is erratic, inconsistent, or fluctuating beyond normal operating parameters. The exhaust pressure sensor 2 is crucial for monitoring the exhaust system's back pressure, providing essential data for engine performance optimization, emissions control, and identifying issues within the exhaust system.

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