Other XC90 Problem: - 284:ECM-5200 Engine Speed (RPM) sensor.Signal missing, B6294

tfern · Jun 22nd, 2013, 10:42

XC90 T6 Petrol 2.9cc - year 2003

Hi folks,
Bit of a strange starting issue that we have - has anyone had anything similar and how did you rectify?

The first fault was that the car took along time to start - about 10 attempts to start with code 284:ECM-5200 Engine Speed (RPM) sensor.Signal missing, B6294T.

We took it to a local Volvo specialist and they informed us that normally this meant that the ECM would need replacing (£700) but they didn't think this was the case. So they have insultaed & shrink wraped main sections of wiring loom to help with interference problem from surrounding circuits and wiring looms and run in a new wiring loom to ECM.

They also replaced the starter motor which had a bolt missing.
The car would then start first time every time.
Total cost £1300.

Now 2 weeks later we have a situation where the car will start first time in the morning but NOT when it gets hot - again it now takes a few minutes before the engine will turn over!!

Any ideas? suggestions welcome - thank you.

Shadeyman · Jun 23rd, 2013, 14:45

Did they replace the RPM Sensor?

Would have been the first thing I did ..

deano2614 · Jul 28th, 2013, 21:02

Hi there

Does the rev counter stick or bounce around when the poor starting happens.

Juhizz · Nov 28th, 2016, 20:06

Quote:

Originally Posted by deano2614

Hi there

Does the rev counter stick or bounce around when the poor starting happens.

Hello,

I have an V70 with 2.4T and it does this. What does it mean?

diro · Nov 29th, 2016, 12:51

£1300 - UNBELIEVABLE!
I feel sorry for people paying a fortune to so called volvo or whatever make specialists who dont know a thing!

You have a trouble code 284:ECM-5200 Engine Speed (RPM) sensor.Signal missing. A clear indicator where it should be started to trace a fault

Plug scanner, read fault, check live sensor data. If that is not enough than for a deeper diagnostics test wiring with simple digital multimeter! A sensor has only 2 wires going directly into ECU. Not a big deal to test these wires if there is a short to ground for example. Check voltage. Sensor is supplied with 5v. 1st wire - ground (from ECU), 2nd live 5v

ECU is the last thing to blame.
£1300 for 2 wires loom?
Oh dear...

Jun 22nd, 2013, 10:42	#1
tfern New Member Last Online: Jun 23rd, 2013 20:52 Join Date: Jun 2013 Location: exeter	284:ECM-5200 Engine Speed (RPM) sensor.Signal missing, B6294 XC90 T6 Petrol 2.9cc - year 2003 Hi folks, Bit of a strange starting issue that we have - has anyone had anything similar and how did you rectify? The first fault was that the car took along time to start - about 10 attempts to start with code 284:ECM-5200 Engine Speed (RPM) sensor.Signal missing, B6294T. We took it to a local Volvo specialist and they informed us that normally this meant that the ECM would need replacing (£700) but they didn't think this was the case. So they have insultaed & shrink wraped main sections of wiring loom to help with interference problem from surrounding circuits and wiring looms and run in a new wiring loom to ECM. They also replaced the starter motor which had a bolt missing. The car would then start first time every time. Total cost £1300. Now 2 weeks later we have a situation where the car will start first time in the morning but NOT when it gets hot - again it now takes a few minutes before the engine will turn over!! Any ideas? suggestions welcome - thank you.

Nov 29th, 2016, 12:51	#5
diro Member Last Online: Nov 2nd, 2020 19:59 Join Date: Sep 2013 Location: Norwich	£1300 - UNBELIEVABLE! I feel sorry for people paying a fortune to so called volvo or whatever make specialists who dont know a thing! You have a trouble code 284:ECM-5200 Engine Speed (RPM) sensor.Signal missing. A clear indicator where it should be started to trace a fault Plug scanner, read fault, check live sensor data. If that is not enough than for a deeper diagnostics test wiring with simple digital multimeter! A sensor has only 2 wires going directly into ECU. Not a big deal to test these wires if there is a short to ground for example. Check voltage. Sensor is supplied with 5v. 1st wire - ground (from ECU), 2nd live 5v ECU is the last thing to blame. £1300 for 2 wires loom? Oh dear... __________________ S40 T4 1998 XC90 D5 R-Design 2008; 215 bhp; 475Nm - SOLD

Jun 23rd, 2013, 14:45	#2
Shadeyman VOC Member Last Online: May 28th, 2020 23:57 Join Date: Jun 2012 Location: Wolverhampton	Did they replace the RPM Sensor? Would have been the first thing I did ..

Jul 28th, 2013, 21:02	#3
deano2614 New Member Last Online: Aug 3rd, 2013 22:15 Join Date: Jul 2012 Location: Wakefield	Hi there Does the rev counter stick or bounce around when the poor starting happens.

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