What is P1516 : Engine Error code Causes Explained
This tutorial covers the P1516 engine fault code, which signals an intake manifold runner control (IMRC) system issue. Poor engine performance, lower power, and higher emissions frequently indicate an actuator or sensor issue.
How to Identify a DTCs Number
The P1516 engine error code typically indicates an issue related to the throttle body or throttle position sensor. To identify this code, a diagnostic scanner or OBD-II tool is needed
Understand that the trouble codes (DTCs) are 5 characters: 1 letter, 4 numbers. P-Powertrain indicates the fault code’s location. Generic or manufacturer-specific codes are indicated by the first digit. The second digit denotes the subsystem (7=transmission). The last two numbers describe the issue.
The error code P1516 might occur during an engine startup or while driving, especially when there’s an abnormality in the communication between the throttle body and the ECM.
Causes of P1516 Code:
- Damaged Throttle Plate:
Leads to stalling, rough idle, or hesitation from physical damage or carbon buildup. - PCM Problems:
Results in poor engine management from software corruption or hardware failure. - Wiring Issues:
Causes erratic throttle response due to frayed wires or corroded connectors. - Throttle actuator control (TAC) module Problems:
Can cause reduced power or limp mode due to faulty electronics or software.
Risk Level of P1516 Error Code:
The “high risk” classification typically appears when the issue can trigger severe drivability issues, especially if it leads to inconsistent or erratic engine behavior. It’s essential to take immediate action.
Common Car Brands Affected by P1516 Code:
The P1516 engine error code is commonly found in following list.
- Buick
- GMC
- Hummer
- Saturn
Video: P1516 Engine Error code
FAQ’s
What does the P1516 engine error code mean?
The P1516 error code indicates a problem with the throttle actuator control system, specifically the throttle body position sensor or circuit.
Which cars are affected by the P1516 error code?
The P1516 code typically affects vehicles equipped with electronic throttle control systems, including various models of Buick, GMC, Hummer and Saturn.
What causes the P1516 engine error code?
This code can be caused by a malfunction in the throttle body, a damaged throttle position sensor, or a problem with the wiring or connectors within the throttle control system.