2020年1月2日 · How can I diagnose OBDII code P159F (GMC) Fuel Economy Mode Switch Circuit Low Voltage? Diagnosing this code typically involves using a scan tool to read the code, checking the fuel economy mode switch for proper operation, inspecting the wiring and connectors for damage, and testing the PCM to ensure it is functioning correctly.

The P159F fault code refers to a problem with the Fuel Economy Mode Switch Circuit’s low voltage. The Engine Control Module (ECM) supplies a 5 V reference voltage to the fuel economy mode switch. This voltage causes current to flow through resistors in the …

2020年1月2日 · 1. What are the common symptoms of OBDII code P159F in a Chevrolet related to the Fuel Economy Mode Switch Circuit Low Voltage? - Common symptoms include poor fuel economy, illuminated check engine light, and potential issues with the vehicle's performance. 2. What are the possible causes of the P159F code in a Chevrolet?

2020年1月2日 · Code P159F Description. The Engine Control Module (ECM) supplies 5 V reference voltage, through the 5 V reference voltage circuit, to the S87 fuel economy mode switch. The 5 V reference voltage causes current to flow through a series of resistors in the switch to the switch ground circuit.

DTCs P159F and P15A0 run continuously when the above condition is met. The ECM detects that the voltage on the fuel economy mode switch signal wire is either too low or too high out of range. DTCs P159F and P15A0 are Type B DTCs. Engine Controls Schematics. Component Connector End Views. Powertrain Diagnostic Trouble Code (DTC) Type Definitions.

2024年9月12日 · What Is the P159F Code? The P159F diagnostic trouble code indicates a problem with the Fuel Economy Mode Switch Circuit in a vehicle. This code specifically points to low voltage being detected within the circuit. In modern vehicles, fuel economy mode is a feature that optimizes the engine's performance to achieve better fuel efficiency.

2018年11月6日 · The P159F code is probably due to the low battery situation; it will be set on many recent GM models when voltage to the mode control switch (tour/sport/weather in the ATS) drops too low. Is your car still in bumper to bumper warranty? If so just get it …

2020年2月12日 · Code P159F stands for Fuel Economy Mode Switch Circuit Low Voltage. Read the article to know possible causes, symptoms, and descriptions.

Code: P159F Make: GMC Description: P159F GMC Fuel Economy Mode Switch Circuit Low Voltage Possible causes: – Faulty Fuel Economy Mode Switch – Fuel Economy Mode Switch harness is open or shorted – Fuel Economy Mode Switch circuit poor electrical connection Solutions: – Carry out a Reset via CarDiag – Choose a better quality fuel

The cause of the condition may be that the X200 connector was not fully connected and locked or poor terminal tension, resulting in an open circuit. Inspect the X200 IP harness to Body harness connector following the steps in the Service Procedure below. Copyright 2020 General Motors LLC. All Rights Reserved. 1.