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Home/DTC Codes/Pontiac/Sunfire/1995-2005 2.2L I4/P1518
P1518

Throttle Actuator Control Module Serial Data Circuit

1995-2005 Pontiac Sunfire 2.2L I4

High SeverityPowertrain

Description

The PCM is not receiving serial data from the Throttle Actuator Control module. This communication failure prevents proper throttle control.

Symptoms

  • Reduced Engine Power
  • Check Engine Light
  • Throttle not responding
  • Vehicle may not accelerate
  • Stalling

Common Causes

  • TAC module failure
  • Serial data circuit wiring damage
  • Corroded connector
  • PCM failure
  • CAN bus issue

Diagnostic Steps

  1. Check TAC module power supply
  2. Test serial data communication
  3. Inspect wiring between TAC and PCM
  4. Check for CAN bus faults
  5. Test TAC module

Repair Notes

Repair communication wiring or replace TAC module.

Related Codes

P1516Throttle Actuator Control Position PerformanceP1516Throttle Actuator Control Module Throttle Actuator Position PerformanceP1516Throttle Actuator Control Module Throttle Actuator Position PerformanceP1516Throttle Actuator Control Module Throttle Actuator Position PerformanceP1516Throttle Actuator Control Module Throttle Actuator Position PerformanceP1516Throttle Actuator Control Module Throttle Actuator Position PerformanceP1516Throttle Actuator Control Module Throttle Actuator Position PerformanceP1516Throttle Actuator Control Module Throttle Actuator Position PerformanceP1516Throttle Actuator Control Module Throttle Actuator Position PerformanceP1517Throttle Actuator Control Module PerformanceP1517Throttle Actuator Control Module PerformanceP1517Throttle Actuator Control Module PerformanceP1517Throttle Actuator Control Module PerformanceP1517Throttle Actuator Control Module PerformanceP1517Throttle Actuator Control Module PerformanceP1517Throttle Actuator Control Module PerformanceP1517Throttle Actuator Control Module PerformanceU0107Lost Communication with Throttle Actuator Control Module

Other Powertrain Codes

P1518 on Other Vehicles

Pontiac Aztek

2001-2005 3.4L V6

Pontiac Bonneville

1990-1999 3.8L V6

Pontiac Bonneville

2000-2005 3.8L V6

Pontiac Bonneville GXP

2000-2005 4.6L V8

Pontiac Bonneville GXP

2000-2005 4.6L V8 Northstar

Pontiac Bonneville SSEi

1992-1999 3.8L Supercharged V6

Pontiac Bonneville SSEi

1992-1999 3.8L V6 Supercharged

Pontiac Firebird

1993-1997 3.4L V6

Common Questions

What does code P1518 mean on a 1995-2005 Pontiac Sunfire?

P1518 stands for "Throttle Actuator Control Module Serial Data Circuit". The PCM is not receiving serial data from the Throttle Actuator Control module. This communication failure prevents proper throttle control.

What are the symptoms of P1518 on a Pontiac Sunfire?

Common symptoms of P1518 include: Reduced Engine Power, Check Engine Light, Throttle not responding, Vehicle may not accelerate, Stalling.

What causes P1518 on a 1995-2005 Pontiac Sunfire?

Common causes of P1518 include: TAC module failure, Serial data circuit wiring damage, Corroded connector, PCM failure, CAN bus issue.

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