Engine-Codes - Cadillac - P1134 CADILLAC

P1134 CADILLAC - HO2S Transition Time Ratio Bank 1 Sensor 1

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

P1134 CADILLAC Possible Causes

  • Faulty HO2S Bank 1 Sensor 1
  • HO2S Bank 1 Sensor 1 harness is open or shorted
  • HO2S Bank 1 Sensor 1 circuit poor electrical connection

How is the P1134 CADILLAC code repair?

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 P1134 CADILLAC code

Labor: 1.0

The cost to diagnose the P1134 CADILLAC code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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When is the code detected?

The P1134 is sets if the Powertrain Control Module (PCM) detects the HO2S ratio is not within range.

Possible Symptoms

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

P1134 CADILLAC Meaning

The Powertrain Control Module (PCM) monitors the Heated Oxygen Sensor (HO2S) activity. During the monitor period the PCM counts the number of times that the HO2S responds from rich to lean and from lean to rich and adds the amount of time it took to complete all transitions. With this information, an average time for all transitions can be determined. The PCM then divides the rich to lean average by the lean to rich average to obtain a ratio.

More Information

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