Doug2.7

2001 A6 2.7T
So, I changed out both the 16067 and 16069 O2 sensors and I still get the following codes:

P1113
P1131
P1136

When getting to highway speeds I get a flashing ESP light and ABS light comes on and power loss (engine seems to bog down then work as advertised intermittently. If I push the ESP button in on the dash, I don't get any power loss going up to highway speeds and the ABS light does not come on.

I just replaced the timing belt and internal water pump (yeah, that was a fun job).

I have the older (original) VagCom tool but that laptop is now dead so that is useless. I had to use a cheapo reader to get the above codes...

I reset both connections on the O2 plugs.

odoboyusa

I think you need to scan the abs module, something is triggering it to believe you're losing traction and it's telling the engine to reduce power.

Doug2.7

Thanks odo...

odoboyusa

if your abs module seems to be faulty (they fail quite often), then you can have it rebuilt so you have a warranty. I sent mine to bba-reman for my c6 and they did a great job. but don't buy their service from their site, look on ebay, at least that's where i found it 100 bucks cheaper.

SloopJohnB@mac.com

Although when I got the same ABS and ESP lights on my A6 I did not lose power. The loss of power may be associated with intermittent or failed knock sensor(s). On my 4.2 they were under the intake manifold (%@%@#$%!!!).

the ABS ecm can be removed and the car driven (won't have ABS and might have rear-wheel brake bias…be careful until you figure out what happens). Just wrap the exposed solenoid buttons/ABS unit in thick aluminum foil and cable tie it.