vauxhall zafira b - MAF sensor replacement.

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Sun 4 May 2025 16:26
vauxhall zafira b - MAF sensor replacement. - Mr Glenn Pierce

Hi I have a number of ECU errors which are most like related to the MAF sensor. I have replace the air filter and cleaned the MAF sensor with Liquid Moly cleaner.

It has not helped though. Looking at live data from the ECU just gives 0's for the live MAF

looking at car parts sites using my reg gives MAF sensors in housings which can't be right as the housing does not come off on my car.

A ipc of my car
drive.google.com/file/d/1pqZTySmh0FyzzjCTGS88NxTEI...g

Do I need to prise the sensor out ? Anyone know of viids of that ?

Can anyone provide a link to a cheap replacement.

Thanks

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Sun 4 May 2025 18:25
vauxhall zafira b - MAF sensor replacement. - elekie&a/c doctor
What engine do you have ? That photo is not the maf sensor.
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Sun 4 May 2025 22:59
vauxhall zafira b - MAF sensor replacement. - Mr Glenn Pierce

That would explain it.
My engine details are

Engine size: 1.8L (1796cc)

Fuel type: Petrol

Aspiration: Naturally aspirated (non-turbo)

Cylinders: 4

Reg WG63NHT

I have no idea where that sensor is then. Probably not easily accessible.

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Sun 4 May 2025 23:15
vauxhall zafira b - MAF sensor replacement. - elekie&a/c doctor
Should be located in the air intake pipe system . 4 pin connector. May be secured to the pipe work with 2 screws . Depending on what engine control system fitted , it may not have a maf sensor, in which case it’ll have a Map sensor.

Edited by elekie&a/c doctor on 04/05/2025 at 23:19

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Sun 4 May 2025 23:25
vauxhall zafira b - MAF sensor replacement. - Mr Glenn Pierce

Thanks I will get a pic tomorrow in the light of the whole area.
It must have one as my errors were

Car Scanner ELM OBD2

Version: 1.118.0/401180/GP

DTC report

Connection profile: Vauxhall OBD-II / EOBDDate: 5/2/2025 9:05:27 AM

VIN: W0L0AHM75E2013789

============================

OBD-IIOBD-II

DTCs: 2

----------------------------

P1101 [0x1101]

MAF Sensor Out Of Self Test Range

Mass air flow (MAF) sensor - range/performance problem

Status: Confirmed

----------------------------

P0171 [0x0171]

System too lean, bank 1

General Electrical Failures: short to battery [0x01]

Status: GM failure record

============================

Engine control unitEngine control unit

DTCs: 2

----------------------------

P1101 [0x1101]

MAF Sensor Out Of Self Test Range

Mass air flow (MAF) sensor - range/performance problem

General Electrical Failures: signal invalid [0x08]

Status: DT…

Edited by Mr Glenn Pierce on 04/05/2025 at 23:28

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Mon 5 May 2025 09:06
vauxhall zafira b - MAF sensor replacement. - Mr Glenn Pierce

The pic of whole engine area is
drive.google.com/file/d/1PoTwAef36cvRMrr9XAQoTPEuT...g

I could see anything near the air intake which goes into the air filter then past the sensor I now think is the temperature sensor.

Could it be possible the firmware just refers to MAF when they could also mean MAP ?

Thanks

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Mon 5 May 2025 09:44
vauxhall zafira b - MAF sensor replacement. - elekie&a/c doctor
Yes , as I thought. The sensor in the air trunk is the air temp sensor. There’s no maf sensor on this system. It’ll have a Map sensor on the inlet manifold. If the engine is running ok , then that fault code p1071 could indicate an air leak on the system, not necessarily a faulty component.
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Mon 5 May 2025 16:19
vauxhall zafira b - MAF sensor replacement. - Mr Glenn Pierce

Thanks for the help

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