What is P2231 : Engine Error code Causes Explained
The P2231 engine error code indicates an issue with the oxygen sensor circuit. This guide covers its causes, symptoms, and possible fixes to help you diagnose and resolve the problem effectively.
How to Identify a DTCs Number
The Diagnostic Trouble Code (DTC) P2231 refers to an issue with the oxygen sensor circuit, specifically “O2 Sensor Positive Current Control Circuit Low (Bank 1, Sensor 1). To identify a DTC number like P2231, you need an OBD-II scanner. Connect the scanner to the vehicle’s OBD-II port, usually located under the dashboard, and turn on the ignition.
Understand, this trouble codes (DTCs) are 5 characters: 1 letter, 4 numbers. P-Powertrain indicates the fault code’s location. Generic or manufacturer-specific codes are indicated by the first digit. The second digit denotes the subsystem (7=transmission). The last two numbers describe the issue.
The scanner will read and display any stored error codes, helping you diagnose the issue.
Causes of P2231 Error Code:
- Faulty O2 Sensor:
The sensor itself might be damaged or malfunctioning. - Wiring Issues:
Damaged, corroded, or shorted wiring in the O2 sensor circuit. - Faulty O2 Sensor Heater Circuit:
A malfunction in the heater circuit can cause incorrect sensor readings. - PCM Issues:
A rare but possible cause where the engine control module itself has faults. - Exhaust Leaks:
An exhaust leak before the O2 sensor can lead to improper readings.
Risk Level of P2231 Error Code:
The High-Risk Level of the P2231 engine error code indicates a serious issue with the O2 sensor signal circuit, typically affecting engine performance, emissions, and fuel efficiency.
Ignoring this code can lead to expensive repairs or even complete engine failure, so it’s best to diagnose and fix the issue as soon as possible.
Common Car Brands Affected by P2231 Code:
The P2231 engine error code is commonly found in the following list.
- Ford
- BMW
- M. XY 1215
- Volkswagen
- Cadillac
- Honda
- Chevrolet
- Peugeot
- Kia
Video: P2231 Engine Error code
FAQ’s
What is P2231 Error Code?
P2231 is an O2 sensor circuit low voltage code, indicating an issue with the oxygen sensor signal in Bank 1, Sensor 1.
What Causes P2231?
This error can be caused by a faulty oxygen sensor, damaged wiring, a bad ECM, or an exhaust leak.
What is the Risk Level of P2231?
The risk level is high as it affects fuel efficiency, emissions, and engine performance.
What Vehicles Are Affected by P2231?
This code is commonly found in Ford BMW M. XY 1215 Volkswagen Cadillac Honda Chevrolet Peugeot and Kia vehicles with O2 sensor-related issues.