Chevrolet Cruze Forums banner

Common Issues and Fixes for 2014-2015 Cruze Diesel

50109 Views 31 Replies 18 Participants Last post by  BDCCruze

I finally got around to putting this together. Please post any corrections/additions below. I am going for common issues here, not things that just pop up once randomly.

Symptoms: Could be a DEF Quality poor message (P20EE) but usually a code (P21DD) for the DEF heater. Sometimes these messages are related to each other. The P21DD is more definitive.
Solution - DEF Tank Reservoir Heater – Replacement part number 23377881 (replaces 22978800). Update: In my case, it gave the DEF quality poor message but the CEL never actually lit up. You can also get a P20B9 code, but that usually only comes after one of the other codes or the def quality poor message have already reared their heads. There is an extended warranty on this 10years 120K miles. Note that it can take up to 100 miles after replacement for the error to clear!

Symptom: P0133 code (O2 sensor bank one slow response)
Solution: Most commonly there is a fuel trim update that can be done to prevent the sensor from getting sooted up in the first place. Sometimes it's not necessary to replace the sensor. You can get away with just cleaning it. Could also be caused by a few other things. Some have reported that issues with the EGR or EGR plate could cause this. Others have reported that loose intake clamps could cause this. (See post below for more details).

Symptom: Pop sound followed by loss of power, rough running, strong smell of diesel fumes, visible smoke. Check engine light may or may not appear. Note: So far this has only happened on cars with over 150K miles.
Solution: Most likely your intercooler pipe has cracked. Top, right, rear of the engine as you facing the car. Part number is 95472182 for the intercooler pipe. Some have reported this also causing damage to other related components, but only with extended driving in the broken condition.

Symptom: P20E4 code (Exhaust Gas Temperature Sensor 2/3 Correlation Bank 1)
Solution: Further diagnosis must be done to determine if it’s sensor number 2 or number 3 causing the issue. EGT3 Part number is 55581034 and EGT2 is 55581035

Symptom: Your car displays a message that says “DPF Full Keep Driving” (or something like that) followed by “Engine Power Reduced”. Most likely you have interrupted a “pre-regen”.
Solution: Unfortunately, you will need to go to the dealer for a manual DPF regen. See this post for how to prevent:

Symptom: P11D7 NOx Sensor 2 Performance - Sensing Element Status Signal
Solution: Replacement of the NOx sensor, but sometimes the code will clear itself. This can also be caused by the exhaust flange bolt mentioned below. Some good info in post 46 here:

Symptom: Any number of random codes
Solution: The exhaust flange bolts under the middle of the car are prone to corrosion and snapping off. Getting these replaced along with the gasket as a preventative measure is a good idea, mainly if you live in a northern climate where salt is used on the roads. Procedure to fix is here:

Symptom: Any number of random codes
Solution: A common issue is that the intake hose clamps work themselves loose over time (or come loose from the factory) allowing for unmetered air. Procedure to check is here:

Symptom: Failure to start, any number of weird electrical gremlins, failure of transmission to shift out of 1st gear
Solution: Most likely, it's the battery. The factory battery only seems to last about 2 years in these cars. Another thing, if you've not had your negative battery cable replaced, do so. It's an extended warranty item up to 10 years, 120K miles. More about the cable is here:

Symptom: P11DC after the NOx Sensor 1 and reprogram emissions recall. The theory is that the parameters set in the ECU reprogramming are too tight and throw a P11DC code which isn't really a valid code. This can also cause DEF Quality Poor message. More info here:
Update on the above - the recall has been recalled. More info here:
1 - 1 of 1 Posts

· Registered
3 Posts
Not sure if this is the right place to post but I had all the same issues i'm seeing here before I bought the TriFecta tune. Please trust me that I'm NOT advocating or endorsing the company, only offering personal experience. I burned the traditional NoX1 and NoX2 sensors twice under warranty and never since....
I still burn up a DEF heater every 30K since I bought the car new... other than that, I've experienced none of the issues I see regularly expressed here. The tune is completely emissions compliant with both states i've resided in, Washington and Idaho, and has produced no negative effects on my driving or maintenance.
My 2014 2.0 was purchased new in 2016 and the TriFecta tune is the only modification (not installed till 2021). I've had the sunroof glass recalled, the DEF heater replaced 3x under warranty, the steering rack replaced for lack of return to center issues, from new (later proven to be tire issue caused by factory tires, after extensive dealer and manufacturer effort, credit to them), and learned the hard way that 4.8 QTS really means NOT 5QTS(at the dealer thankfully) only manual regen required so far.
Fuel mileage is subjective based on use and conditions. Do NOT expect a gain in MPG. My personal driving habits are somewhat aggressive and lead to accelerated wear due to cornering forces. My experience has proven that increased power usage negated any possible MPG gains but driving same said vehicle daily offered a more than favorable driving experience vs fuel consumption. Other drivers may see different results, because... reality... more power requires more fuel, duh. I guess I mean to say that any increased efficiency was lost on me due to my appreciating the improved engine performance... which I enjoy regularly.
1 - 1 of 1 Posts