P029B Code: Meaning, Causes, and Symptoms | OBD2 Codes

P029B – Cylinder 1 – Fuel Trim at Min Limit

 

P029B Possible Symptoms

 

Engine Light ON (or Service Engine Soon Warning Light)

 

P029B Possible Causes

 

Faulty Fuel Injector 1,Clogged or Leaking Fuel Injector 1,Fuel Injector 1 harness is open or shorted,Fuel Injector 1 circuit poor electrical connection

 

P029B Description

 

The Powertrain Control Module (PCM) monitors the fuel pressure at the fuel rail through the Fuel Pressure Sensor (FPS). The PCM sets the OBDII code when the fuel pressure is out of factory specifications.