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Ok sooooo here we go again with more issues with my wifes 2003 beetle convertable. So i took it to autozone the other day because she mentioned to me that about hqlf way home from work her gas pedal was acting funny and wudnt rev past 3100 ish rpms and the epc light along with the engine livht came on ,so i took it to autozone to just get a rouvhh idea of the issue/issues that are occuring so after they took a basic diagnostics heres the error codes that. Followed P0031, P0037, P0418, P0102, P2188, and P2400, so please

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P 0031 is the heated oxygen sensor1 bank 1 replace itit is the one in the exhaust manifold before the cat converter
code p 0037 is the heated oxygen sensor in the other bank in the exhaust manifold before the cat converter code p 0418 refers to secondaryair injection(AIR) pump relay--circuit malfunction===replace the relay
code p 0102 refers to tye mas air flow (MAF) and the volume air flow(VAF) sensor ===causes --wiring short to ground---MAF/VAF sensors
code p 2188 refers to system too to rich at idle bank 1 by replacing the both heated oxygen sensores and cleaning /replacing the MAF/VAF sensors it should fix the problem

Posted on May 14, 2017

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Posted on Jan 02, 2017

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SOURCE: The engine light and VSC

your o2 sensor is bad. vsc will go on for any small DTC displayed on the MIL (cel)

P0037 LEXUS P0037 LEXUS - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 2 Symptoms - Engine Light ON (or Service Engine Soon Warning Light)
Possible causes - Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit fuse
- Faulty Engine Control Module (ECM) When is the code detected? The P0037 is set when the ECM detects an excessively low voltage through the heated oxygen sensor heater circuit P0037 LEXUS Description Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).

In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECMcontrols the heater element circuit by allowing current flow to ground.

The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.

o2_heater_circuit.gif

Posted on Mar 14, 2011

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Cheers. Rate this

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Sorry I couldn't be more descriptive.

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