ECM codes P0153, P0174, P0230 and P0231

Good morning,

The 153 code is for a slow response from the O2 sensor. In most cases, it is the sensor itself that is the issue.

https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

https://www.2carpros.com/articles/how-to-test-an-oxygen-sensor-02-sensor

The 174 is a lean condition. This is related to the 230-231 codes. The injectors are not firing due to an electrical failure to the injectors. I would also check the fuel pressure to be sure there is sufficient pressure to the injectors. You can rent a tester at a parts store.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/how-to-check-wiring

The 220-221 is a wiring issue to the injectors. This could be a wiring harness fault. You need to test power to all the injectors to see where the power is missing.

Roy

153

DTC
P0153
Symptom Descriptor
Ho2S Sensor Circuit Slow Response (Ho2S-21)
Probable Causes
Exhaust Leaks
Heated Oxygen Sensor (HO2S) Contaminated
Heated Oxygen Sensor (HO2S) Deteriorating
Improper Fueling
Inlet Air Leaks
Mass Air flow (MAF) Sensor
Wiring Shorted or Open

174

DTC
P0174
Symptom Descriptor
System To Lean (Bank 2)
Probable Causes
Cam Timing
Cylinder Compression
Exhaust Gas Recirculation (EGR) Valve Stuck
Exhaust Leaks Before or Near Heated Oxygen Sensors (HO2S)
Fuel Injectors Leaking or Contaminated
Fuel Pressure Excessive
Fuel Pressure Regulator Leaking
Gasket Leaking
Improperly Seated Engine Oil Dipstick
Leaking Diaphragm or EGR Vacuum Regulator (EVR)
Low Fuel Pressure or Running Out of Fuel
Oil Overfill
Positive Crankcase Ventilation (PCV) System
Vacuum Leaks
Vapor Recovery System

230-231

DTC
P0230
Symptom Descriptor
Fuel Pump Primary Circuit Malfunction
Probable Causes
Fuel Pump Circuit Open or Shorted
Fuel Pump Relay Damaged
Ignition Switched Power (VPWR) Circuit Open to Fuel Pump Relay
Powertrain Control Module (PCM) Damaged