P0030 subaru. The A/F sensor is responsible for .

P0030 subaru May 29, 2017 · Clink on the links for trouble shooting information. Check Engine Light diagnostic P0030 Bank 1 Sensor 1. Jan 8, 2022 · Good morning kings, just double-checking before I do anything stupid here - I drive a manual 2004 forester 125 hp. Have tested the sensor and it has a 2. HO2S Heater Control Circuit Bank 1 Sensor 1 is the generic definition for the P0030 Subaru; however your vehicle’s manufacturer may have a different definition and information for the P0030 Subaru code. CEL on. Zelfs een losse tankdop, die een vacuümlek kan veroorzaken. I got the faulty code P0030, understood as one of the Lambda sensors (oxygen sensors) are faulty. Als de fout voor de voorste sensor was, of een misfire, zou de cruise control niet goed of efficiënt functioneren, met een verbrandingsprobleem. This was performed on a 2011 Outback with 173k miles. Currently stays on. I Mar 28, 2021 · Welcome to the NASIOC. Learn what HO2S 11 Heater Control Circuit means, location and how to repair. Feb 17, 2022 · Subaru Forester: P0030 Causes + Diagnosis Here are the most common causes of P0030 in the Subaru Forester, presented to you in a somewhat proper order of diagnosis: 1. P0030 en P0031 worden ingesteld wanneer de weerstand in het Jun 11, 2018 · Hello all, I've had my 2011 2. Check the Wiring on Bank 1 Sensor 1 Since the PCM is not getting a response from the heated oxygen sensor circuit, check the wiring harness for damage. Feb 17, 2022 · P0030 Definition: Heater Control – Circuit – B1S1 P0030 indicates no signal coming from your Subaru Outback’s Bank1 Sensor 1 oxygen sensors heater circuit. This code indicates a HO2S Heater Control Circuit (Bank 1 Sensor 1) issue and may be caused by bad wiring harness, defective front oxygen sensor, or poor contact in ECM or front oxygen sensor connector. The heater control circuit is designed to ensure that the Feb 26, 2013 · P0030 HO2S Heater Control Circuit Jump to Latest 9. The A/F sensor is responsible for Mar 30, 2025 · Subaru is niet de Ford/Mazda. In order to achieve the require Jun 2, 2016 · Code P0030 stands for Oxygen O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1). The heated element within the oxygen sensor heats the sensor faster than the exhaust can. 5 about 130,000 miles. Turned it off with the reader came back on in about 2 days. The A/F sensor is responsible for Jun 22, 2022 · Hello I'm new here only just got the Subaru, I got it from extended family the engine light is on and the code is po0 030 P0030, before I got the vehicle the o2 sensor was replaced with an aftermarket item, but the code still comes up, with sensor removed from exhaust it does heat up, but Jul 11, 2023 · P0030 Subaru: Code Meaning, Causes, Symptoms, & Tech Notes 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. 5 non turbo and have had a p0030 code. P0030 Definition: Heater Control - Circuit - B1S1 P0030 indicates no signal coming from your The P0030 diagnostic trouble code (DTC) refers to a malfunction in the HO2S (Heated Oxygen Sensor) Heater Control Circuit for Bank 1 Sensor 1. I think car had original O2 sensor so just bought a new Denso 234-9015 upstream unit then replaced. Feb 17, 2022 · Subaru BRZ: P0030 Causes + Diagnosis Here are the most common causes of P0030 in the Subaru BRZ, presented to you in a somewhat proper order of diagnosis: 1. Com In the realm of automotive diagnostics, the P0030 trouble code stands out as a common issue that can plague vehicles equipped with an oxygen sensor heater circuit. Said p0030__E1 heater control circuit bank 1 sensor 1. Dus elke motor- of transmissiefout zal de CC uitschakelen. Today we'll be testing and replacing an air fuel sensor. Troub. If your Subaru Outback, Impreza, Forester or Legacy has a bad air fuel sensor Make: Subaru Code: P0030 Definition: HO2S Heater Control Circuit (Bank 1 Sensor 1) Description: Poor drivability Condition established time ≥ 42000 ms Battery voltage ≥ 10. I checked with the dealer and for part# 22641aa360 I was quoted $400 + Feb 17, 2022 · Subaru Impreza: P0030 Causes + Diagnosis Here are the most common causes of P0030 in the Subaru Impreza, presented to you in a somewhat proper order of diagnosis: 1. Nonetheless Feb 17, 2022 · Subaru Liberty: P0030 Causes + Diagnosis Here are the most common causes of P0030 in the Subaru Liberty, presented to you in a somewhat proper order of diagnosis: 1. Take a look here: P0030 SUBARU - HO2S 11 Heater Control Circuit Mar 9, 2018 · Hey guys, I have an 03 OBW 4cyl. Ze zijn slimmer dan dat. (Upstream sensor 1. code reader says P0030, heated Oxygen sensor, Heater wire circuit, Bank 1 sensor 1. P0030 indicates an O2 sensor heater circuit malfunction. I did do the front sensor, bad place to get out of, dropped front pipe made sure elec Mar 7, 2017 · P0030 - HO2S Heater Control Circuit (Bank 1 Sensor 1) Not saying it's your problem, but most forum members say Denso O2 sensors, factory/OEM or direct fit work best with the Subaru ECM. This code is almost always caused by a bad heated oxygen sensor or wiring issue. 4K views 5 replies 2 participants last post by cardoc Feb 26, 2013 eugenelt Discussion starter Apr 12, 2024 · P0030 HO2S Heater Control Circuit (Bank 1 Sensor 1): Understanding, Diagnosing, and Fixing GuideMechanic. The car seems to be driving okay. Is there a Jun 9, 2025 · What is a P0030 code and how do you fix it? We’ll break it all down, but you can likely relax as there’s a good chance you dodged a bullet with this one. 2003 outback 2. 9 V Heater current - Permitted Control duty ≥ 35 % - Experienced After fuel cut - ≥ 20000 ms Cause: Bad wiring harness between ECM and front oxygen sensor connectorDefective front oxygen sensorPoor contact in ECM or Feb 17, 2022 · P0030 is a very common OBD2 trouble code. This indicates the PCM has detected a problem with the bank 1 oxygen sensor. Feb 17, 2022 · Subaru Tribeca: P0030 Causes + Diagnosis Here are the most common causes of P0030 in the Subaru Tribeca, presented to you in a somewhat proper order of diagnosis: 1. May 25, 2021 · Hi everyone, My first post here so be nice :) i have a 2004 2. 2003 Subaru Forester. After confirming proper voltage and grounds, inspect the sensor harness for shorts or corrosion. This sensor is responsible for monitoring the oxygen levels in the exhaust gases and sending feedback to the engine control module (ECM) to adjust the air-fuel mixture for optimal combustion. ) Also known as A/F sensors, these are a bit more sophisticated than oxygen sensors found in older vehicles. 5X for a few months now and have been fighting with the CEL ever since I got it. Apr 3, 2015 · All Activity Home Newer Generations of Subaru discussion 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX P0030 Upstream O2 Sensor keeps failing Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Mar 23, 2020 · P0030 Subaru: Code Meaning, Causes, Symptoms, & Tech Notes 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. Jan 13, 2013 · I posted about this before and didn’t get any replies so here goes again with more information. How to test and replace an air fuel sensor on a modern Subaru. Learn what HO2S Heater Control Circuit Bank 1 Sensor 1 means, location and how to repair. Aug 18, 2024 · The P0030 code for Subaru vehicles indicates an issue with the Heater Control Circuit of the HO2S (Heated Oxygen Sensor) 11, which is located in the exhaust system. The technician checked for 12V on the harness side, which was good. Oct 20, 2014 · P0030 - front O2 sensor replacement (2. P0032 SUBARU - HO2S11 Heater Control Circuit High P0030 SUBARU - HO2S 11 Heater Control Circuit Here in the States, a good place to find the Denso O2 sensor part number is here: densoautoparts. Do these codes reference the upstream O2 sensor? If so How to Fix P0030 Code: Oxygen Sensor Heater Control Circuit RepairDescription:In this video, we’ll walk you through the steps to diagnose and fix the P0030 e 2003 Subaru Impreza Outback Sport P0030 Code Diagnosis Impreza Outback Sport often faces persistent P0030 codes despite O2 sensor replacement and wiring checks. After clearing the code, it returns after about 100 miles. tripped CEL last week. 5 NA) My CEL has come on and off a few times now. So last time I have the code read it showed P0134 and P0030, guy at AutoZone told me it was most likely an upstream O2 sensor How to test and replace a rear oxygen sensor on a late model Subaru. 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. 7ohms across the 2 same colour Apr 18, 2020 · P0030 - Positive voltage coming from negative side O2 Sensor heater circut when engine off ignition switch off Jump to Latest 11K views 18 replies 6 participants last post by skysteve Jul 9, 2025 tanmann13 Discussion starter Feb 2, 2024 · Learn what a P0030 code means, the most likely causes, and how to diagnose and fix the problem A P0030 code is defined as an HO2S Heater Control Circuit (Bank 1 Sensor 1). Aug 13, 2024 · Uncover the mystery behind Subaru Code P0030 and discover the possible causes behind it. 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). 0L Issue + repair history: MIL lamp on with a P0030 code for the front oxygen sensor heater circuit (Bank 1 Sensor 1). Mar 23, 2024 · Repair Information for P0030 Subaru code. Love the vehicle just want to get it running correctly. 5L Boxer engine. You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. Mar 18, 2025 · Troubleshoot the P0030 code to uncover the root cause of your engine's poor performance, from faulty wiring to oxygen sensor failure. Repair Information for P0030 code. It's generic, which means it has the same definition for the Subaru WRX as any other vehicle. So I ordered this: FAE Lambdasond it says sensor before catalysator "Universal Apr 22, 2025 · Discover what the P0030 code means, its causes, symptoms, and how to fix the HO2S heater control circuit issue on Bank 1 Sensor 1. Where is this located. The heated element reduces emissions by letting the fuel trim enter closed loop operation more quickly. Oct 30, 2023 · Case #6: Subaru Vehicle information: 2016 Subaru WRX 2. This happens to be a 2011 Subaru Outback with the popular Subaru 2. Mar 6, 2018 · First, the P0030 CEL code is telling you there's an issue with the O2 sensor heater circuit. I had it scanned and it comes back as P0030 which I've been told is the front O2 sensor (AF sensor). 5XT Turbo automatic transmission. I replaced the bank 1 sensor 1 with a one from a wrekers (only cost 15 aud so what the heck) But the code re appeared. com - find my part Bobby ['07 FSXT Member Journal] ['03 X Member Journal] May 8, 2014 · My code reader shows P0030 and P0137 error codes for my 05 OB 2. Registration is free Feb 17, 2022 · P0030 Definition: Heater Control – Circuit – B1S1 P0030 indicates no signal coming from your Subaru Legacy’s Bank1 Sensor 1 oxygen sensors heater circuit. com Subaru forum. P0030: SUBARU - HO2S 11 Heater Control Circuit. iofwl uye ekg uwip0 ra 5o atz gpmdr1 eoict 2jxe