18565/P2133

18565/P2133 - Throttle Position Sensor Bank 2: Signal too High

Possible Symptoms

• MIL on
• Reduced Power Output

Possible Causes

• Faulty Accelerator Pedal (very unlikely)
• Wiring Harness Issue
• Faulty ECM
• O2 Sensor(s)

Possible Solutions

• Inspect and test Wiring harness for Accelerator Pedal, see Repair Manual
• Visually inspect O2 sensors for damage

Special Notes

• O2 sensor issues can also cause the following DTCs:
  • 16610/P0226 - Throttle Pedal Position Sensor (G79): Implausible Signal
  • 18560P2128 - Accelerator Position Sensor 2 (G185): Signal too High
• In some cases, O2 sensors will damage the ECM. Ross Tech suggest to replace O2 sensors before replacing an ECM for this type of issue.