Advice re PSM/ABS

[v6toj]

Hi, after 15 mins of driving from cold start without fail two dash lights come on, abs and psm. Any ideas as to why this happens?

 

[gizlaroc]

Is it exactly 15 minutes?

Is it the same spot where it happens on a drive you do every day rather than time related?

If not then I wonder if it is when it gets up to proper temp? A in the oil pressure starts to drop, not just the coolant hitting 80ºc?

If it is when it gets up to temp I wonder if it is MAF related?

When it gets up to temp I would expect the MAF to expect different signals, if it is starting to fail that could throw those warnings.


I'm thinking out loud, but something to consider.

 

[Kersidan]

As above. I forgot to reconnect my MAF plug after having the air filtre box out. The car threw up ABS and PASM warnings.

 

[v6toj]

Is it exactly 15 minutes?

Is it the same spot where it happens on a drive you do every day rather than time related?

If not then I wonder if it is when it gets up to proper temp? A in the oil pressure starts to drop, not just the coolant hitting 80ºc?

If it is when it gets up to temp I wonder if it is MAF related?

When it gets up to temp I would expect the MAF to expect different signals, if it is starting to fail that could throw those warnings.


I'm thinking out loud, but something to consider.

Cheers for the reply, I noticed today it took 38 mins before lights came on so seems variable. Will investigate MAF cheers

 

[photek]

Connect an OBD reader and get the error codes. I also get PSM/ABS lights on my car and it's the steering angle sensor that needs to be re-calibrated.

 

[Alex]

Are you driving on an uneven surface when it happens or in a straight line/round bends/etc?

 

[v6toj]

Are you driving on an uneven surface when it happens or in a straight line/round bends/etc?

I noticed it happened on straight part of road today

 

[Alex]

Electrical gremlin.

 

[Carrera4Boy'sDad]

Brake pedal switch faulty ?