[SOLVED] P1147 Code: Fixing Heated Oxygen Sensor 2 Maximum Voltage Issue

If you’ve noticed your engine light is on or you’re experiencing high fuel consumption and excessive smoke from the exhaust, you may be dealing with fault code P1147. This code is typically caused by a faulty heated oxygen (O2) sensor 2 (rear), intake air leaks, a poor electrical connection in the heated oxygen sensor circuit, or even faulty fuel injectors.

To fix this issue, start by visually inspecting the wiring harness and connectors for any damage. Look out for broken, bent, pushed out, or corroded connector pins.

This repair is of moderate importance and difficulty, with an estimated time of 1.0.

Repair Importance Level10.0 (Out of 10)
Estimated Repair TimeApproximately 1.0 hour
Repair Difficulty Level6.67 (Out of 10)

If you’ve noticed your engine light on, experienced high fuel consumption, or excessive smoke from the exhaust, you may be dealing with the p1147 fault code.

  • The symptoms of the automobile fault code p1147 include: Engine Light ON (or Service Engine Soon Warning Light), possible high fuel consumption, and possible excessive smoke from the exhaust.

The automobile fault code p1147 can be caused by a faulty heated oxygen sensor, intake air leaks, electrical connection issues, fuel pressure problems, or faulty fuel injectors.

  • The fault code P1147 can be caused by a faulty heated oxygen (O2) sensor 2 (rear), intake air leaks, an open or shorted harness for the heated oxygen (O2) sensor 2 (rear), a poor electrical connection in the heated oxygen (O2) sensor 2 (rear) circuit, inappropriate fuel pressure, or faulty fuel injectors.

To fix the p1147 fault code, start by visually inspecting the wiring harness, connectors, and components for any damage or corrosion.

  • To fix the automobile fault code p1147, start by checking the possible causes mentioned above.
  • Then, visually inspect the wiring harness and connectors related to the issue.
  • Look for any damaged components and check for broken, bent, pushed out, or corroded connector pins.
  • This fix is estimated to take approximately 1.0 hour.

The factors influencing the cost of diagnosing and fixing the automobile fault code p1147 are the estimated repair time of 1.0 hour and the typical auto repair shop charges of $75 to $150 per hour.

The P1147 fault code refers to the Heated Oxygen Sensor 2 (HO2S) in the rear of the vehicle. This sensor monitors the oxygen level in the exhaust gas on each bank of the engine. It is crucial for the proper operation of the catalytic converter, as it helps maintain the ideal air-fuel mixture.

The HO2S generates a voltage between 0.1 and 0.9 V in response to the oxygen in the exhaust gas. If the oxygen level increases, indicating a lean air-fuel ratio, the HO2S voltage drops below 0.45 V. On the other hand, if the oxygen level decreases, indicating a rich air-fuel ratio, the HO2S voltage rises above 0.45 V.

The P1147 code specifically indicates that the Engine Control Module (ECM) is monitoring the maximum voltage from the Heated Oxygen Sensor 2. This code helps diagnose potential issues with the sensor or the air-fuel mixture, allowing for timely repairs to maintain optimal engine performance.

What are the possible symptoms of the automobile fault code P1147?

If you notice your engine light is on or your service engine soon warning light is illuminated, along with possible high fuel consumption and excessive smoke from the exhaust, you may be experiencing the automobile fault code P1147. This code is often caused by a faulty heated oxygen (O2) sensor 2 (rear), intake air leaks, a poor electrical connection in the heated oxygen sensor circuit, or faulty fuel injectors. To fix this issue, visually inspect the wiring harness and connectors, checking for any damage or corrosion. Additionally, examine the components for any signs of breakage or bending.

What are the potential causes of the P1147 fault code?

If you’re experiencing the P1147 fault code, you might notice your engine light is on, along with possible high fuel consumption and excessive smoke from the exhaust. This code can be caused by a faulty heated oxygen sensor 2 (rear), intake air leaks, a poor electrical connection in the sensor circuit, or even faulty fuel injectors. To fix the issue, start by visually inspecting the wiring harness and connectors, checking for any damage or corrosion. Be sure to also examine the components for any signs of breakage or bending.

How can the P1147 fault code be fixed?

If you’re experiencing the P1147 fault code, you might notice your engine light is on, along with possible high fuel consumption and excessive smoke from the exhaust. This issue is typically caused by a faulty heated oxygen (O2) sensor 2 (rear), intake air leaks, a poor electrical connection in the heated oxygen sensor circuit, or faulty fuel injectors. To fix it, start by visually inspecting the wiring harness and connectors, checking for any damage or corrosion. Also, look out for broken or bent pins on the connectors.

p1147 error fault code explained

If you’re experiencing the Engine Light ON or Service Engine Soon Warning Light, along with possible high fuel consumption and excessive smoke from the exhaust, the issue could be a faulty heated oxygen (O2) sensor 2 (rear), intake air leaks, or other related causes. To fix it, visually inspect the wiring harness and connectors, check for damaged components, and look for any broken, bent, pushed out, or corroded connector pins.

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