Engine-Codes - Isuzu - P0053 ISUZU

P0053 ISUZU Code - HO2S Heater Resistance Sensor 1

- Code Popularity: 7,022 Views
- Repair Importance Level: 2/3
- Repair Difficulty Level: 2/3
Table of contents

|What are the Possible Causes of the P0053 ISUZU Code?

  • Faulty Heated Oxygen Sensor Bank 1 Sensor 1
  • Heated Oxygen Sensor Bank 1 Sensor 1 harness is open or shorted
  • Heated Oxygen Sensor Bank 1 Sensor 1 circuit poor electrical connection

|How to Fix the P0053 ISUZU Code?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

|What is the cost to diagnose the P0053 ISUZU code?

Labor: 1.0

The cost to diagnose the P0053 ISUZU code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

|What are P0053 ISUZU code possible symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the P0053 ISUZU Code Mean?

The Heated Oxygen Sensor (HO2S) must reach the operating temperature to provide an accurate voltage signal. A heating element inside the HO2S minimizes the time required for the sensor to reach operating temperature. With the engine running, the ground is provided to the heater by the HO2S heater low control circuit through a low side driver within the Powertrain Control Module (PCM). The PCM commands the heater ON or OFF to maintain a specific HO2S operating temperature range. The PCM determines the temperature by measuring the current flow through the heater. When the heater is in the ON state, the PCM will pulse the heater OFF for 50 ms, once per second. The PCM calculates the heater resistance on a cold start. The Diagnostic Trouble Code (DTC) will set if the heater current requirements too low or high in the HO2S heater control circuit.
HO2S Heater Resistance Sensor 1

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