Code Definition

P1142 — Fuel Restriction Condition

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Generic

About P1142

P1142 is a manufacturer-specific powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

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.

P1142 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

This code is set when the powertrain control module (PCM) detects excessive fuel flow restriction based on input from the fuel restriction sensor. A restriction in the fuel system can lead to poor engine performance, hesitation, or fuel starvation, especially under load.

Quick Facts