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Discussion Starter #1 (Edited)
Recently put my peugeot 306 diesel hdi back on the road after being off road for a few years. Its passed its MOT, but it has some issues.

The engine management light is on, but all i get from the ecu is "no reply from ecu"

Also the wipers stutter and stop in the middle on the screen on some settings but work fine on others.
 

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Not so sure on the engine faults, but the wipers are a cheap fix.

It's the wiper parking sensor that has broken - easiest to just replace the whole wiper motor, (any 306 one will do from any phase). It's not too hard to change, just take off the wipers and then the black plastic trim below them and the motor comes off with just a few bolts.
 

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Discussion Starter #4
I've used the lexia 3 device as well as a bluetooth adapter. Using the diagtool it can tell if i don't turn the ignition on but all i ever get back is no reply from ecu.

The mot place was also unable to find out the cause.
 

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Discussion Starter #6
all of the fuses are fine, i've cleaned the contacts on the ecu. next would be checking the wiring from the obd port. If anyone has a wiring diagram that would be helpful, the ecu is a 3 plug type.
 

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Recently put my peugeot 306 diesel hdi back on the road after being off road for a few years. Its passed its MOT, but it has some issues.

The engine management light is on, but all i get from the ecu is "no reply from ecu"

Also the wipers stutter and stop in the middle on the screen on some settings but work fine on others.
yo have not even stated what engine, I would check the cat has not blocked and pull the vacuum pipe of the egr and put a golf tee in the pipe to block it and see how it runs then
 

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Discussion Starter #8
2.0 litre turbo diesel x reg hdi, the current issue isn't the engine, its the ecu isn't outputting data across the OBD2 port to enable diagnosis of the current issue/ clear the error to remove limp mode
 

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from my experience when a known working code reader wont work it is down to faulty wiring from the ecu or a faulty ecu. ive had it happen to me a few times. check your wiring then see if you can lend an ecu of someone nearby maybe
 

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Discussion Starter #10 (Edited)
0 281 010 592
edc15c2 69
96 420 148 80


001211
28fm310
1166 0809
09211

these are the codes off the physical ecu, if any one has a guide to the wiring that would be helpful in identifying a dodgy wire, so i don't have to take the whole car apart to find a single wire fault
 
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Do you have access to an alternative code reader, Lexia/Planet ideally, as the box with the green light have been known to suffer from bad solder joints, subsequently unable to read certain ECUs.

At least this will prove its the ECU or the code reader..?

The engine management light is probably the cause of the limp mode, and I don't think your car has a DPF so I would also go with blanking the EGR vacuum, or unplugging the MAF ( this will cause its own fault code but will go out when plugged back in and done a few trips ) to see how it goes.
 

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Discussion Starter #13
Is there a way of reading the ecu directly from the 3 plug ecu port, wiring it directly to an obd adapter, skipping the car completely?
 
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