DDEC III/IV Single ECM Troubleshooting – Section 22.1 Description of Flash Code 22

Section 22.1
Description of Flash Code 22

Flash Code 22 indicates that the Throttle Position Sensor (TPS), see Figure "Throttle Position Sensor" , input to the ECM has dropped below 5% (normally < 0.25 volts) of the sensor supply voltage. ‪

This diagnostic condition is typically:‪

• Open sensor signal circuit
• Open sensor +5 volt supply circuit
• Sensor signal is shorted to sensor return circuit or to ground