2019年8月26日 · The P1514 code for Chevrolet indicates a problem with the Throttle Actuator Control System's Mass Air Flow performance. This means that the vehicle's engine control module (ECM) has detected a discrepancy between the expected mass air flow readings and the actual readings from the throttle actuator.

2023年7月12日 · We’ll give you an overview of the P1514 code meaning and list the main reasons behind the code’s activation, as well as list some diagnostic and fixing methods you can use to avoid dealing with the code’s greatest threats.

The automobile fault code p1514 can be caused by a faulty Throttle Actuator Control (TAC), an open or shorted TAC harness, a poor electrical connection in the TAC circuit, or a faulty Mass Air Flow (MAF) Sensor.

2019年8月26日 · TP sensor 1 signal voltage decreases as the throttle opens. Check the 'Possible Causes' listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins. Need more information about the P1514 GMC code?

2023年8月19日 · For trailblazer, Silverado, GMC, and Chevy trucks, P1514 means there is an issue with the throttle control actuator and excessive airflow into the engine. Kenworth, Peterbilt, and Paccar trucks have this code which translates as a fault in DEF dosing. However, experts say this code shows up due to the persistence of other DTCs.

2009年5月31日 · DTCS P0120, P0220, P1514, P1515, P1518 and P2135 may also be present. If the SI diagnostics do not isolate the cause, inspect the Yellow TAC Motor Control Circuit (581) about 1 inch to 4 inches from the throttle body connector to see if it is broken inside of the insulation. Repair as necessary. Click to expand...

P1514 is a diesel engine fluid operator interface (DEFOI) tampering category trouble code, activated by the occurrence and persistence of another code. The ignition should always be in the OFF position when connecting or disconnecting electrical components to reduce the likelihood of damage to the components.

2024年10月17日 · The P1514 code means there’s a problem with the Throttle Actuator Control (TAC) system, specifically with the Throttle Actuator Control Module (TACM). When this code shows up, it can cause the engine to run roughly, have …

2019年8月26日 · Repair Information for P1514 GMC code. Learn what Throttle Actuator Control System Mass Air Flow Performance means, location and how to repair?

The OBD-II DTC codes here generally apply to all OBD-II GM vehicles from 1996 and newer: GMC, Chevrolet, Buick, Cadillac, and former brands Oldsmobile, Pontiac, and Saturn. There may be slight changes depending on the year/model of vehicle, you would need to consult a factory service manual for specifics.