What is the solution for the P0137 trouble code?

[ORafael]

Solution for the P0137 trouble code: First, check the heater resistor wire of the oxygen sensor. If it is faulty, the heater resistor wire of the sensor needs to be replaced. If the resistor wire is normal, check the wiring from the sensor to the computer. If the wiring is fine, it indicates a sensor fault, and the entire sensor needs to be replaced. Introduction to the P0137 trouble code: 1. The P0137 trouble code refers to low voltage in the oxygen sensor circuit, specifically the second oxygen sensor in the first row. When the voltage of the heated oxygen sensor signal remains below 156 millivolts for a set period, the P0137 trouble code will appear. 2. The causes of this trouble code include contamination of the oxygen sensor, crossed signal and ground circuits of the oxygen sensor, short circuit in the oxygen sensor signal circuit, failure of the oxygen sensor itself, or a fault in the electronic control module.

[SaraDella]

When encountering the P0137 trouble code, I usually first check if the rear oxygen sensor is damaged or has loose wiring. This code indicates the sensor voltage is too low, possibly caused by aging or an exhaust system leak. Start by inspecting the connector plug for corrosion or disconnection - that part tends to accumulate dust underneath the chassis. If doing it yourself, buy a diagnostic tool to clear the code and drive for a few minutes to see if it reappears; if it persists, you'll need to remove the sensor to check terminal cleanliness. Last time on my friend's Toyota, I found worn wires causing a short circuit - replacing the O2 sensor fixed it. A reminder: don't ignore exhaust system cracks as leaks can affect readings. Safety first - never work on hot components. If unsure, have a professional shop inspect it to prevent small issues from becoming major problems. Sensor lifespan is typically 80,000-100,000 km, with older vehicles requiring more frequent checks.

[StRiver]

As a car owner, I believe in starting simple when addressing the P0137 trouble code. Low voltage issues often stem from problems with the rear oxygen sensor's connection. First, pop the hood and inspect the sensor connector to ensure it's secure and free from corrosion; a quick clean with WD-40 might do the trick. If that doesn't work, check the wiring for any damage or short circuits. This sensor monitors emissions, and low voltage can trigger the check engine light. From my experience, it's wise to test the voltage with a multimeter before replacing the sensor; an OEM part bought online won't cost much. Avoid DIY risks like touching hot components without gloves, which can lead to burns. Common causes also involve the fuel system—poor fuel quality can skew sensor readings, so try adding a fuel system cleaner. Address issues promptly to prevent skyrocketing fuel costs from draining your wallet. In short, take it step by step without rushing, and maintain your vehicle regularly post-repair to prevent recurrence.

[SophiaLynn]

From an automotive enthusiast's perspective, the P0137 trouble code indicates abnormally low voltage from the rear oxygen sensor. The solution is straightforward: inspect and replace the sensor. Positioned towards the rear, this sensor is prone to heat damage from exhaust gases, causing data drift as it ages. Here's how I've handled similar cases: First, disconnect the battery to clear codes, then road test. If the light reappears, check for connector or wiring issues like breaks or corrosion. DIY repairs save money, but remember safety first – avoid crawling under the vehicle. These sensors monitor exhaust gases, helping the ECU adjust fuel mixture. Low voltage could stem from wear, moisture, or electrical faults. Confirm with an OBD2 scanner (affordable online). When replacing, choose OEM-spec parts – cheap knockoffs hurt performance. A proper fix brings back that smooth engine feel.