P1516 Chevrolet Code - Throttle Actuator Control Module Throttle Actuator Position Performance
Quick Answer
The Engine Control Module (ECM) determines the driver's intent based on input from the accelerator pedal position sensors, then calculates the appropriate throttle response based on the throttle position sensors. Common causes include Binding or bent Throttle Plate, Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1516 Chevrolet indicates Throttle Actuator Control Module Throttle Actuator Position Performance.
- Common causes
- Common causes include Binding or bent Throttle Plate, Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1516 Chevrolet Description
What are the Possible Causes of the DTC P1516 Chevrolet?
- Binding or bent Throttle Plate
- Faulty Throttle Body Assembly
- Throttle Body Assembly harness is open or shorted
- Throttle Body Assembly circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P1516 Chevrolet?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
2006-2007 Chevrolet Avalanche
2006-2007 Chevrolet Express 1500/2500/3500
2006-2007 Chevrolet Silverado
2006-2007 Chevrolet Silverado Flex Fuel
2006-2007 Chevrolet Silverado Hybrid
2006-2007 Chevrolet Silverado SS
2006-2007 Chevrolet Silverado 2500/3500 HD
2006-2007 Chevrolet Suburban
2006-2007 Chevrolet Tahoe
Chevrolet Factory Service Bulletin OBDII Code P1516
2002-2009 Chevrolet Trail Blazer
2004-2012 Chevrolet Colorado
Chevrolet Trail Blazer, Colorado Factory Service Bulletin OBDII Code P1516
User Submitted Video
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1516 Chevrolet code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Information for Specific Chevrolet Models
- P1516 2014 Chevrolet Silverado — Throttle Actuator Control Module Throttle Actuator Position Performance
- P1516 2015 Chevrolet Silverado — Throttle Actuator Control Module Throttle Actuator Position Performance
- P1516 2016 Chevrolet Silverado — Throttle Actuator Control Module Throttle Actuator Position Performance
- P1516 2017 Chevrolet Silverado — Throttle Actuator Control Module Throttle Actuator Position Performance
- P1516 2018 Chevrolet Silverado — Throttle Actuator Control Module Throttle Actuator Position Performance
Frequently Asked Questions about P1516 Chevrolet Code
1. What is OBDII code P1516 in a Chevrolet?
Code P1516 indicates a problem with the Throttle Actuator Control Module's performance, specifically related to the throttle actuator position.
2. What are the common symptoms of P1516 in a Chevrolet?
Common symptoms of code P1516 include engine hesitation, reduced power, stalling, and the vehicle going into "limp mode" with limited acceleration.
3. What are the possible causes of OBDII code P1516 in a Chevrolet?
Potential causes of code P1516 include a faulty throttle actuator control module, a defective throttle actuator, wiring issues, or a problem with the electronic throttle control system.
4. How can I diagnose OBDII code P1516 in my Chevrolet?
Diagnosing code P1516 typically involves checking the throttle actuator control module and throttle actuator for proper functioning, inspecting the wiring for any damage, and using a scan tool to monitor sensor data.
5. Can I still drive my Chevrolet with OBDII code P1516 present?
It is not recommended to drive your vehicle with code P1516 present, as it can lead to unsafe driving conditions and potential damage to the engine or other components.
6. How can I repair OBDII code P1516 in my Chevrolet?
Repairing code P1516 may involve replacing the throttle actuator control module, repairing any wiring issues, or recalibrating the throttle actuator using a scan tool.
7. Is it safe to reset the OBDII code P1516 in my Chevrolet using a scan tool?
Resetting the code using a scan tool may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear. It is recommended to diagnose and repair the root cause of the problem.
8. How much does it typically cost to repair OBDII code P1516 in a Chevrolet?
The cost of repairing code P1516 can vary depending on the specific issue, parts needed, and labor rates. It is advisable to consult with a mechanic or dealership for an accurate estimate.
9. Can a DIY enthusiast fix OBDII code P1516 in a Chevrolet?
Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair code P1516 themselves. However, complex electronic issues may require professional expertise.
10. Will driving with OBDII code P1516 damage my Chevrolet's engine?
Continued driving with code P1516 can potentially lead to further damage to the engine or other components, as the issue may affect the vehicle's performance and drivability. It is best to address the problem promptly.
Discuss the causes and fixes for P1516 Chevrolet OBDII Code
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We have an 03 Tahoe 5.3L that has the p1516 code issue. Replaced battery, throttle body, and tb wiring harness and still powers down within minutes of driving. What else could be the issue. We even moved the ground from the right head. Frustrated! I've read so many things online and still can't find the problem. This is the only code.
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I have an 03 Silverado,,it lost power today,and set code p1516,,where is the throttle actuator control module located? could it be a bad throttle position actuator motor?
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It's all one piece in the throttle body. Throttle actuator module and motor.
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In June 2015 I got P1516, P2135, P0220, took it to the chevy dealer and they replaced the throttle body for $650. Oct 2015 I got the same 3 codes and now they want to replace the TAC module, connector and terminals for $900, Chevy Express 3500. Does this seem correct?
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Unfortunately it is correct, after the throttle body fails, it sometimes the TAC module has to be replace as well. The failed to let you know that both components may fail at the same time..
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Not correct, it is rivited to the throttle body. NAPA sells a unit you can drill out the rivits and install just the electrical unit. Have done on all my companies Chevy work trucks.
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Hello Andrew do u happen to have the Napa part number for this I have been having the same issue with my truck and don't have the money to keep taking it to the dealers and the people from the Napa around me have no idea what I'm talking about they said for me to get a part number and they will get it for me.
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2003 Tahoe shot a code P1516. what do you replace? the throttle actuator control module (TAC) or throttle actuator position performance?
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It's all one piece in the throttle body, but according to another user NAPA sells a unit that you can drill out the rivets and install just the electrical unit.
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I have this code and I don't know what I should do? . This problem deleted by removing the battery and retarn the battery back. Please any one can help me
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What model and year is your vehicle? You could start by cleaning the throttle body and if the problem persist, you may have to replace the throttle body.
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I just replaced mine tonight it's the throttle body position sensor TPS my 2003 gmc has been throwing a bunch of codes hopefully this work it will send my truck into reduced engine power
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I have a 2004 Silverado 4x4 very low miles. I have had the famous p1516 code. I have replaced the wiring harness, the throttle body assembly., The throttle pedal assembly and ran another #8 THHN ground. It still has a p1516 code about once a week or so. Please help. Oh I used all GM OEM parts.
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I have a 2007 Tahoe that just turned 112,000 miles and this problem just happened to me ! Car was driving fine then all of sudden at a stop sign the car stalled and shut off ? I restarted the car and it was running very poorly with a bad miss and the truck was now in " Limp Mode" reduced engine power message came across the screen , I was able to limp it back home doing less than 5 mph with my foot on the floor almost 5 miles ! parked it in my driveway hooked up my scanner and there it was , the dreaded P1516 code . Let it sit as we took our other car out , when we got back i restarted the car , its now running fine but the check engine light is still on . Going into the garage now to investigate the throttle body wiring and throttle blade to see if i see anything
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Definitely sounds like the plate of the throttle body is sticking. You could try cleaning the throttle body before replacing any parts.
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It's not all one piece. The Throttle Position Sensor (TPS) is riveted onto the Throttle Body, and can be drilled loose and replaced separately. But the Throttle Actuator Control (TAC) module is mounted on the upper driver's side firewall in the engine compartment.
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It's not all one piece! The Throttle Position Sensor (TPS) is riveted onto the Throttle Body, and can be drilled loose and replaced separately. But the Throttle Actuator Control (TAC) module is mounted on the upper driver's side firewall in the engine compartment.
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TPS is Dorman 977-000 for my 2003 GMC Sierra 2500HD. No GM part number for the TPS for my year and model. The throttle body is GM 12570800.
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Check the ground wire from the TAC harness to the back of the engine block passenger side. I had theses same issues and this was the culprit. I just pulled on it until it snapped and regrounded it to the grounds on the firewall. I think it was a black wire with a white stripe. What a nightmare
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Disconnected battery..... Hooked back up engine light out... Idling ok. Went for about a 10-mile ride. Stopped in the driveway and engine light came back on. Bought a fix it plug and found it's a p1516 code. Saw the notes from others and got discouraged... Haven't touched it since. HELP
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2004 Chevy Malibu Maxx 3.5L V6 with the P1516 code...Anybody got any Model Specific data thats not already been stated above. Any help would be appreciated...
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Let me check if I can get you more information. What specific data are you looking for? For the 2004 Chevy Malibu Maxx 3.5L V6 the most likely cause of the problem is the Throttle Body.
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Was driving my 2002 oldsmobile bravada the other day, after parking and shutting off it won't start now, turns over but no start. Scanner codes p1516, p1515, p0107. Any advice would be greatly appreciated.
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The P1516 and P1515 codes both indicate issues with the Throttle Actuator Control (TAC) system, while P0107 points to a Manifold Absolute Pressure (MAP) sensor low input issue. Since your 2002 Oldsmobile Bravada turns over but won't start, these codes are likely related and suggest an issue with the throttle control or intake system.
Explanation of the Codes:
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P1516 - Throttle Actuator Control Module Position Performance:
- The ECM detects that the throttle position doesn't match the commanded position.
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P1515 - Throttle Actuator Position Performance:
- Similar to P1516, this indicates a performance problem in the throttle body system, often due to an electrical fault.
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P0107 - MAP Sensor Circuit Low Input:
- The ECM is receiving a low voltage signal from the MAP sensor, which can affect air-fuel calculations and prevent starting.
Possible Causes:
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Throttle Body Malfunction:
- The throttle plate may be stuck, dirty, or the throttle actuator motor could be faulty.
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Faulty Wiring or Connectors:
- Loose or damaged wiring in the TAC circuit or to the MAP sensor can cause communication errors.
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Failed MAP Sensor:
- A faulty MAP sensor can disrupt engine control, causing starting issues.
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ECM Issues:
- Although less common, a failing ECM or corrupted TAC control software could also be a factor.
Troubleshooting Steps:
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Inspect and Clean the Throttle Body:
- Remove and inspect the throttle body for carbon buildup or obstruction.
- Clean the throttle plate and bore with throttle body cleaner to ensure smooth operation.
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Check Throttle Actuator Wiring:
- Inspect the wiring harness and connectors to the throttle body for corrosion, loose connections, or damage.
- Ensure that the throttle position sensor (TPS) connectors are secure.
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Inspect the MAP Sensor:
- Locate the MAP sensor on the intake manifold.
- Inspect the sensor and its wiring for damage or disconnection.
- Use a multimeter to test the sensor's voltage output. A reading below spec could indicate a faulty sensor.
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Check for Vacuum Leaks:
- A vacuum leak can cause both MAP sensor issues and throttle control problems. Inspect hoses and intake components for cracks or disconnections.
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Reset and Test:
- After addressing potential causes, clear the codes with a scanner and try starting the vehicle.
- If the issue persists, you may need further diagnostics with advanced tools to test the throttle actuator system and MAP sensor functionality.
When to Seek Professional Help:
If you've inspected the throttle body, MAP sensor, and wiring but the codes remain, it may be necessary to have the ECM and throttle system tested by a technician with GM-specific diagnostic equipment.
Let us know how these steps work out or if you need further guidance!
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