CAGinCT

Greetings everyone.

2007.5, 113,000 miles. 2wd, automatic, crew cab, 2500. NO modifications.

My exhaust brake stopped working. I had the red lighting bolt and the yellow engine light illuminated. Smarty Jr. said the lightning bolt was a p2509 code. So I cleaned the battery terminals and cleared the code but the yellow engine light didn't go out. I've been driving the truck like your grandmother and thought maybe that was the problem. So I really got on it leaving a few redlights and stop signs and now the engine light is off too. Problem is according to a buddy with a $4000 snap on scaner, I still have the p2509 code and the exhaust brake still doesn't work. No trouble lights on, nothing in the diagnostic menu, #37 15 amp fuse is good and there is voltage on both sides of it.

Sorry to make my first post a problem post.

BigIron70

Coolant temperature
Ambient air temperature
Exhaust manifold pressure sensor
Throttle pedal position sensor
Fault codes with any of these sensors will cause the exhaust brake feature to be disabled.

CAGinCT

We are not getting any of those codes. The only one that shows up, and is not indicated on the dash, we can only see it using the Snap On scan tool, is P2509 which is intermittent ecu/ecm.

Could a sensor be faulty and not throw a code?

CAGinCT

For the 71 people who viewed this thread, the answer is the Exhaust brake actuator is failing or has failed. Since this is not a serviceable part, the entire turbo needs to be replaced.

Everything associated with the P2509 code checked out ok, which led the tech to check the operation of the EB itself. Sometimes it works, sometimes it doesn't.

Good thing I bought the extended warranty.

shep1

Why would you have to replace the turbo? My exhaust brake is actuated from the computer by a vacuum actuator. It's all bolted on after the turbo.

wiskeyVI

That sucks!

Totallyrad

Because he has a 2007.5 which most likely means he has a 6.7. The 6.7 has a variable geometry turbo and the exhaust break is incorporated into the turbo so basically the turbo is the exhaust brake.

shep1

Did not know that.

Totallyrad

Shep, typically on the 6.7 they have to pay a little less than $100 to activate the exhaust brake. Your ride cost you considerably more for an EB.

CoastalDav

If he has a 6.7 and not a 5.9 with the Jake EB, this don't apply.

Last October my exhaust brake quit working every time the engine thru the
Crank Shaft Position Sensor Code. Come to find out, when the EB was installed and the new belt put on, it was not routed correctly and was wearing into the CSPS. It tool 8 months for it to screw up.

I cleared the code with the Juice and the truck and EB would work fine.

Dave

Ram25002013

does this apply to 2013 ram 2500 6.7? I had to replace my water pump and then the very next day my exhaust brake stopped working. I am not looking forwards to replacing the turbo.