1.4 16v bby. Wire for pre cat exhaust sensor

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adam.brooks
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Joined: Wed Feb 27, 2019 11:16 am

1.4 16v bby. Wire for pre cat exhaust sensor

Post by adam.brooks »

Hi there I had the codes,
p0135 (Heated oxygen sensor (HO2S) 1, bank 1, heater control circuit malfunction),

p1180 (Linear Oxygen Sensor Pump Current Short To Positive)

so I replaced the sensor with a new one cleared faults with a basic obd2 tool and now getting

p1178, p1178p, ( Heated oxy sensor 1 bank 1 heater current open circuit)

P0030, (Heated oxygen sensor (HO2S) 1, bank 1, heater control -circuit malfunction)

P0135 ( Heated oxygen sensor (HO2S) 1, bank 1, heater control circuit malfunction)

After looking online it could be a break in the female connector wire does anybody have any idea where this plug goes to so I can check continuity. Thank you in advance

Polo 9n. 1.4 bby 2002 auto
RUM4MO
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Drives: B8 S4 & 6R/6C1 1.2TSI 110
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Re: 1.4 16v bby. Wire for pre cat exhaust sensor

Post by RUM4MO »

Have you plugged back in the original S1 B1 sensor to, see if it gives the same result and to have a look at the connector pins for being bent/damaged?

Also, have you fitted a genuine replacement which would be VW part or same NTK sensor?
adam.brooks
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Re: 1.4 16v bby. Wire for pre cat exhaust sensor

Post by adam.brooks »

I fitted an eBay matching part number but I think Chinese made. Unpluged new sensor and only getting error code p0030. 2 pins was slightly out of line but not fully bent I will post pic

Going to plug in original once exhaust cooled down.
adam.brooks
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Re: 1.4 16v bby. Wire for pre cat exhaust sensor

Post by adam.brooks »

Original
Original
adam.brooks
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Re: 1.4 16v bby. Wire for pre cat exhaust sensor

Post by adam.brooks »

New part removed
New part removed
abuhsn
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Drives: 2008
Location: west midlands

Re: 1.4 16v bby. Wire for pre cat exhaust sensor

Post by abuhsn »

hello Adam
I'm new to this forum.
I have a Skoda 1.4 2004 Auto BBA engine same as yours.
I'm having the same problem and fault codes as yours and ironically bought a similar sensor from eBay but on replacing the sensor having the cades again.

i was just wondering if you found out the problem and solved it?

thanks

AbuHsn
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