Error codes 23 & 44 - Land Rover Forums : Land Rover and Range Rover Forum
 
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post #1 of 4 (permalink) Old 05-14-2019, 12:51 PM Thread Starter
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Error codes 23 & 44

Yesterday whilst sat in traffic my Range Rover (3.9 1995) suddenly went to lumpy idle and through a Check Engine light. I have a Hawkeye and it showed two errors, 23 - Fuel Supply and 44 - Bank B O2 sensor.

I reset the errors and the car drove home without the issue coming back. Today I had a look to see what I could find. The only potential issue I could find is that the B bank O2 sensor has a count approximately double that of the A bank. I can’t find any information on the Hawkeye that says what the count relates to, a voltage reading would be of more use. I am guessing that it is running rich for some reason on one bank.

The lambda sensors where replaced with genuine sensors last year, the injectors were serviced and cleaned a few months ago, complete new distributor, new leads and plugs. Also a new genuine idle air valve.

Any thoughts????
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post #2 of 4 (permalink) Old 05-14-2019, 03:11 PM Thread Starter
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I have been back out to the car to double check the injector fittings and all feel fine. On tickover when first started, the two O2 sensor readings are identical but once i increase the RPM the two never come close to being the same.
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post #3 of 4 (permalink) Old 05-14-2019, 09:45 PM
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Scroll down a bit below bottom of page untill the Lambda sensors https://www.actproducts.co.uk/2011/l...34912109375000

My friends call me Fery

2000 Discovery Td5 ES manual

Hawkeye v.6, Nanocom EVO,
VDM UCANDAS, oscilloscope


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ALL MY ADVICES ARE BASED ON MY OWN KNOWLEDGE AND MY WAY OF UNDERSTANDING THE DESCRIPTION AND OPERATION OF SYSTEMS... I'M NOT A LAND ROVER TRAINED SPECIALIST JUST AN ADDICTED ENTHUSIAST.
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post #4 of 4 (permalink) Old 05-22-2019, 06:58 AM Thread Starter
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After confusing which bank is which on the V8 we think the lambda sensor issue is coming from a blowing exhaust manifold. If i re set the ECU when the engine is cold it will run fine until it gets to operating temperature, after that it will idle too high and show a fault for lambda sensor on the side of the leak.

The fuel issue has not come back since the occasion it happened.
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