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I have the p1516 code and it will not start it is a 2002 envoy with the 4.2

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OK P1516 is usually have something to do with throttle body or gas pedal, My 1st choice would be the throttle body I would start by removing the air intake hose to gain access to the throttle body once that is out of your way look at the throttle plate with the key on the plate should be partly open if it's fully close or open also try to move the throttle plate DO NOT FORCE IT it should not move when the key is on if it does then you have to replace it, the next to do is to have someone step on the gas pedal while you look at the throttle plate, with the gas pedal to the floor the plate should be wide open . Now the second choice would be the gas pedal and that calls for some electrical back ground, So start with the throttle body., Good luck

Posted on May 23, 2011

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2004 GMC Envoy SLT 4.2L the engine will crank but want start why?


P1516 = Throttle Actuator Position Performance
P2101 = Throttle Actuator "A" Control Motor Circuit Range/Performance

Both of these codes indicate a problem with your throttle position actuator system. I'm not sure how GMC/Chevy treat this, it's possible that if the PCM/ECM will not allow the engine to start if the throttle actuator is not working properly (it may cause the engine to accelerate rapidly when running). You could try replacing the throttle actuator, but that may not solve the problem if it's a wiring issue. Best to have it checked out by a qualified mechanic.

Nov 24, 2016 | GMC Cars & Trucks

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P1515 and p1516 codes saturn vue


p1515,p1516 and p1271 What do these codes mean specifically? I'm lazy, I'm not researching that

Nov 07, 2013 | 2003 Saturn VUE

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P1515 and p1516 codes on 02 envoy,low engine power


originally i had coes 1515 and 1516 with a no start condition. i now only have a 1515. i have checked all wiring and all is good. all reference v are correct and i am stuck because i am having no luck finding diag for this. Any help would be much appeciated.

Dec 28, 2012 | 2002 GMC Envoy

1 Answer

P2101 and p1516


1. This engine uses the Throttle Actuator Control (TAC) system. Thoroughly clean the throttle bore and throttle plate.

2. Inspect the air intake system for a missing or contaminated air filter

there is also a tsb on it TSB 07-06-04-003 for p1516 that involves replacing the pcm

Subject:LSJ, L61, LK5, L52, LL8 Engine -- Reduced Engine Power, MIL/SES Light, DTC P1516, P2135, P2138 (Replace PCM)

Models:2005-2006 Chevrolet Cobalt, Cobalt SS, Malibu
2006 Chevrolet Colorado, TrailBlazer
2006 GMC Canyon, Envoy
2006 HUMMER H3
2005-2006 Saturn ION, ION Red Line
2006 Saab 9-7X
with ECOTECTM 2.0L, 2.2L I-4 Cylinder Engine (VINs P, F-- RPOs LSJ, L61) or
VORTECTM 2.8L I-4, 3.5L I-5, 4.2L I-6 Cylinder Engine (VINs 8, 6, S -- RPOs LK5, L52, LL8)



Attention: The following bulletin information is only to be used if the customer has returned for REPEAT repairs for DTCs P1516, P2135 and/or P2138.



Condition

Some customers may comment on engine operation in the Reduce Engine Power mode with the MIL/SES light illuminated. This condition may be repeated and upon investigation, the technician may find the following DTCs set as current or in history:

• DTC P1516 Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance
• DTC P2135 Throttle Position (TP) Sensor 1-2 Correlation
• DTC P2138 Accelerator Pedal Position (APP) Sensor 1-2 Correlation
Cause

This condition of a repeat DTC P1516, P2135 and/or P2138 may be caused by an internal concern with the PCM.
Correction



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Important: DO NOT replace the APP sensor. Inspect the PCM build date first.

Before following the diagnostic information in SI on DTCs P1516, P2135 and/or P2138, an inspection of the PCM serial number year and Julian (PCM build) date will be necessary to determine if the PCM will need to be replaced to correct the repeat DTC P1516. Refer to Engine Control Module Replacement in SI in order to remove the PCM. Refer to the above graphic illustration (1) for the location of the PCM serial number.

The serial number is read left to right. The last digit of the year is the 9th character and the Julian date is comprised of the 10th, 11th and 12th characters and is used to determine the PCM build date. Refer to the example below to read a build date from the PCM serial number:

* 8 6 Y N AU K 1 5 3 2 5 0 R P N *

If the PCM year and Julian dates are between 5182 and 5304 , replace the PCM. Refer to the Part Catalog to order the correct PCM for your vehicle application, if necessary.

Vehicles with PCM built outside the dates should refer to SI diagnostics for DTCs P1516, P2135 and/or P2138

Dec 13, 2012 | 2006 Chevrolet Cobalt

1 Answer

Engine won't start and shows trouble code P1516 and reduced engine power light is on


Here is the definition of the code.

Possible causes - Faulty Throttle Actuator Control (TAC) module
- Throttle Actuator Control (TAC) module harness is open or shorted
- Throttle Actuator Control (TAC) module circuit poor electrical connection (loose or broken wires)

P1516 CHEVROLET Description The Throttle Actuator Control (TAC) module contains data which is essential for proper TAC operation. The TAC module continuously test the integrity of this data. When the TAC module is unable to write or read data to and from Random Access Memory (RAM), or the TAC module is unable to correctly read data from the flash memory or and internal TAC module processor fault is detected and the Detected Trouble Code (DTC) is set.
Read more: http://engine-codes.com/p1516_chevrolet.html#ixzz286Gl3cSo

Sep 28, 2012 | 2002 Chevrolet TrailBlazer

1 Answer

My 2002 envoy has a miss that just started==was driving on the freeway for about 40 miles @70 pulled n a station to get a drink ==started it back up and it started missing like a dead plug or coil i...


2002 Envoy sle 4.2 L straight 6. Random misfire(PO300). After erasing codes for several days, I finally took my car on the highway and ran it at high speed(70+) for about 4 to 5 miles. Check engine light came on as before but this time it gave me(PO305). Random misfire cylinder 5. So I switched coil 5 with coil 2. Went back out on the highway and repeated as before. This time it gave me(PO302). This was telling me I had a bad coil. Replacing one coil pack solved the problem. The professionals told me low fuel pressure would not give me random misfire, but rather a O2 code because the engine is running lean. Thank you------------------------------------ thank you very much.

Jun 26, 2012 | 2002 GMC Envoy

1 Answer

I have a 02 GMC Envoy w/4.2L. OBDII reader says P1516. What does that mean?


It's referring to a problem detected in throttle actuator control module, but if your not experiencing any driveability issues, it may have been set by a low battery condition as well. Are you experiencing any, or has battery gone low that you know of recently?

Dec 27, 2009 | 2002 GMC Envoy

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