Chevrolet - 1500 :: 2003 - Reduced Engine Power Light Along With P1516 Fault Code
Jan 6, 2014
I have a 2003 Chevy 1500HD 6.0L 4x4. I've recently started getting the "Reduced Engine Power" light along with the P1516 Fault code. I've checked all the wires going to the TAC Module, TPS, and MAP, all appear to be in good condition. The Throttle Body is clean and the "flapper moves freely with no sticking. I only have this issue when it is warm outside. Recently we've had fairly code days between 32-50 degree weather but on the few days that it has gotten warmer, I've had the issue. Since it seems to only happen when its warm, I believe it to be a moisture issue, but I'm not sure.
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My truck is an 2003 2500hd with the 6l engine and 89k miles. From time to time I'm getting message "reduced engine power". Usually at the morning after 10-15 minutes after starting. I have to pull over, shut it off, wait few seconds then restart it. The ses light goes off usually by end of the day ( or after few hours ). When scanned by chevy tech showing code P1516 Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance. I have new battery with new main cable. TAC Module was cleaned.
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From time to time, my Tahoe gives me the "Reduced Engine Power" error, and I lose acceleration capabilities and have to pull over. After a min or 2, I can go again, but the check engine light stays on. With no rhyme or reason, the light will be on or off on the next start up. The problem may or may not happen during a short ride or may happen quite often. I have replaced the Accelerator Pedal sensor, so that is not the problem, I'm assuming.
I've been told that it is the Throttle Body that needs to be replaced, but no mechanic can confirm. They just want to replace it and the pedal. I would really like to keep this truck for a couple more years. Other than this problem, the Tahoe has been pretty good to me. Here are the codes that have been read: P1125, 1516, 2120, 2125 ....
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I have a 2007 chevrolet uplander. Yesterday it started giving a message of reduced engine power and the engine light comes on.
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Truck is a 2003 1500HD Silverado with the 6.0L 364V8. Last winter I started getting the P1516 code and reduced engine power randomly during driving. After dealing with it for about a month I did some research and discovered in most cases it was either the wiring/plug or the TAC module itself. After going over the connections I couldn't see any visible breaks..etc but I decided to go ahead and change out the connector and about 6inches of the wiring.
After replacement the code hadn't come back until today, probably atleast 9months ago was the last time it did it. Today the code came on four times during a 10minute drive. Before it would come on once during the drive, i'd clear it with my scan gauge, and it would not do it again the entire day. I checked all my connections once again and everything is intact and there is no visible breaks and the connector is clean. I'm starting to think that it was just a coincidence that this problem quit when I replaced the connector, and was wondering if colder weather could have weight on this issue?
After poking around the posts on here and other sites I found that many ended up replacing the TAC module which is on the throttle body. After looking at mine the only way I can see replacing that is just buying a new throttle body with the TAC on it, can't seem to find just the TAC part by itself anywhere. So if I were to order a new throttle body how hard is it to remove/install? and do I have to do a relearn process or is it plug and play?
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I just replaced spark plugs and now it is running rough and reduced engine power light is on. did not mix up wires or coil packs. did one at a time.
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This has been a decent truck... lately you drive for 5 miles or so.. it goes to reduced engine power. if you get to side of the road and turn completely off and sit maybe 10 seconds or so, it goes fine again.... I have tried to get a computer reading, but by the time I have gotten it anywhere, the check engine light is off again..
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I have a 2003 Tahoe that I love but is driving me crazy with a "Reduced Engine Power" message. I am driving along and suddenly it dings at me, the message center says "reduced engine power" and I am losing speed. It goes into a "limp mode" in which I cannot accelerate, it cannot pull itself up a hill, and the engine misses badly. I can pull over, shut it off for a couple of minutes and then start it up and run again just fine until it decides to do it again.
There seems to be no rhyme or reason, one day it did it 4 times w/n the first 20 miles, then ran 100 miles w/o doing it at all. I recently took it on a trip that normally takes me 1 1/2 hours, it took 2 1/4 hrs that day because I had to pull over so many times. I was having to stop every 3-4 miles by the time I got there. My usual mechanic has completely given up, told me to trade it. I have had it to another mechanic for over a month now, 3 times he has thought it was fixed, but it wasn't. One time, I didn't even make it the 5 miles to my house before it acted up again.
One other note on this: this past trip I made, I left early in the morning and my lights were flickering high/low. . . this went on for several miles. Finally my lights quit flickering, then I lost engine power, pulled over, shut it off. When I started it back up, the lights started flickering again. The cycle seemed to continue, once the lights would settle, the engine would lose power. I took it to a parts store and had the battery and alternator checked. They said both were fine. (Had never noticed the light thing before, but I can't think of a recent trip after dark.) How I can pass along to my mechanic?
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2002 ... I've been getting a soft engine fault all three lights on and reduced power. This usually occurs if I accelerate hard but also happens if I take a small pot hole in the front, a little bump seems to trigger it as well. Also engine resets to normal after removing key.
It's not logging the fault as had dealer read ECU and said was not logged.
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I have a 2010 Chevy malibu LT with 120000 miles. And today while I was driving my engine disabled and there was a message of reduced engine power. After letting it sit I turned the key and nothing happens all the lights and things come on but the reduced engine power and engine disabled shows up. The car won't crank up. Earlier that day I had my engine coolant temperature sensor replaced. What is going on or what needs to be done? I am getting so frustrated with this car.
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So I just went on a vacation pulling my horse trailer (first time leaving the state with this truck) and at about 5 hrs into the trip I had a message Reduced Engine Power and went from 70 on the interstate to 10 miles an hour and slowing rather quickly. I ended up shutting it off and restarting and it came back just like normal. I found the nearest ford dealer and they put the computer on it and it showed absolutely nothing, no codes and nothing wrong. The mechanic reset some things and we went on our way.
Then I ended up getting a check engine light saturday. I found someone to read the code and it came up with P164A which is an O2 sensor, he was able to clear it and I put on probably 50 miles today and no check engine light. I have about a 10 hour drive back home. Still debating if I take it to ford near here if they will do anything now that it doesn't show a light?? I hate to chance getting broke down on the highway with a truck that will basically shut down like that?? It just doesn't make sense to me.
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I have a 2011 6.7 F-350 Diesel. I bought the truck new and I've never had any problems with it until now. I have a SCT Chip & Tuner. It needed an update so I returned the truck to stock and a code came up on my dashboard that said "reduced engine power" which obviously I thought was Normal because of the modifications done to my truck.
I updated my tuner and returned the truck to a performance tune but this dashboard code will not go away. My truck isn't reading any codes and there's no other indication lights on. The truck has Normal RPM readings but 0 throttle response. No power at all...
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I have a 2015 SRW f350 and has been fairly problem free. Last Thursday I was driving home and I received the reduced engine power and code popped up P0088, high pressure fuel rail issue.. anyway, I just popped over 36k miles, the truck is at 36,278 miles, so I take it in thinking they will goodwill it.
I get a call saying they can't clear the code and the TCM AND PCM can't communicate and they have to reach out to Ford engineering. They find the PCM is corrupt, they call me twice and ask if the truck has been tuned, the answer is no, but then pin me against the wall saying I am the second owner, which I am, and that it could have been tuned prior. I tell them to prove it, you can see if there has been a tune. The truck truly has never been tuned, it was sold at Ford factory auction as a employee vehicle.
Now they are trying to tell me the corruption was due to the tune, which it never had. But they won't goodwill it and say I am responsible for all the diag and work done, I say no. I say this should be a warranty issue and should be covered, they say it was tuned, I told them to prove it.
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I started my '16 6.7 this am and drove it about a mile.
The check engine light came on and at the same time the display said "Reduced Power". I decide to turn around and try to make it back to my shop but shortly after turning around the display said "Low Fuel Pressure" and within a couple of hundred yards it shut down leaving me stranded by the side of the road.....
I called my local dealer who gave me the Ford Cares 800 number. I got a flat bed in about 1.5 hours which I didn't think was too bad considering I live in the country and they brought it to the dealer. The SA said it might be a couple of days before they could look at it as they were pretty busy... What it could be? The engine is stock with 9100 miles on it...
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Chevy 1999 tahoe 5.7 vortec ... Car hesitates engine light reads random misfire at auto zone. Took to dealer said 10 degrees out of time on his diagnostic machine. Replaced just about every thing on engine dealer said he couldn't fix because he couldn't adjust distributor, I told him on my car that you couldn't adjust timing from distributor, who is right?
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IOur 2003 suburban often gets a "reduced engine power" displayed by the computer and the RPMs drop to below 1,000. The vehicle will not accelerate and will not go above 1,200 RPMs no matter how much gas it is getting. Flooring the gas pedal has absolutely no effect and the truck continues on its merry way at about 20 miles per hour.
I have been told by various amateurs that it is the gas lines or electronics that regulate the gas flow. The reduction in engine power seems to happen randomly, but most often if the vehicle is idling for too long (and I'm sure the 110 degree heat doesn't work). I can get it fixed much quicker if I know what the problem may be.
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I have been battling a random reduced power issue with my 2004 Vue, 85000 miles, 4 cyl engine with manual transmission. On random start ups I will get the reduced power and check engine lights. No codes are logged but the freeze data will read mostly 2176 and occasionally a 2101. I have replaced the throttle body and pedal assembly plus checked and reseated the ecm connections. The problem still shows up randomly at start-ups. If it does appear, it seems that if I shut the engine off, turn the key to on without the engine running for about a minute, then restart the car, the car will start ok. It's almost as if the ecm has to relearn the throttle or pedal positions when this occurs.
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I have a 2003 Escalade that I have maintained since day 1. Occasionally when driving the car it will say system disability and reduced engine power, which drops the speed to 20 and I can give all the gas I want it will not go. Happening on and off for 5 months. I can shut it on and off a couple times and it will go back to normal. Have taken it in a couple times to dealer and they have drove it and drove it and it behaves. They believe it is the Throttle body and sensor. But for the price of it, just replace the fuel pump 2 weeks ago, they suggest to see it happening to give me a 100% diagnosis. For now they believe it is that. Should I fix it or wait till it happens and slowly putt into the dealership.
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Check engine light is on and my code reader is giving me a P0000 code that is not listed in the Bentley's list of OBD II codes. My nose is telling me it's emissions related as the exhaust smells too rich. And the car is nearly stalling at idle. Suspect #1 is the MAF but the OBD II code does not support this.
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Earlier this week on my way back home from the gym I got my first check engine light . I scanned the car and got the fault below. What may be causing it?
About the car: 2008 LUX Wagon2.0T FSI50,2XX miles
Scan:
Address 01: Engine Labels: 06F-907-115-AXX.lbl
Part No SW: 3C0 907 115 S HW: 8P0 907 115 B
Component: 2.0l R4/4V TFSI 0020
Revision: 5BH16--- Serial number: VWZCZ000000000
Coding: 040C010A19070160
Shop #: WSC 25129 444 59131
VCID: 3041DE6FDAB3
1 Fault Found:
008583 - Bank 1; System too Lean at Idle
[Code] ....
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Just got a check engine light last night. Pulled the code and got a P202a fault. Some digging indicates its the Ad-Blue tank heater module. TDI forum indicates its anywhere from $850 to 1K to fix. Also that it's not covered under any extended warranty (now there's a shock!) The cars going back to VW so that's not happening.
Is this one of the conditions that will cause the car to go into limp mode at some point? I know that happens when the ad-blue runs low. I'm in Florida so the heater isn't really a big deal. I need to use it another couple of months and I don't want to have this thing leave me stranded. If I have to I'll park it.
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