What are the possible causes of DTC P1334?
NOTE: The listed causes may not be a complete list of all potential problems and there may be other causes.
- Faulty Exhaust Gas Recirculation (EGR) Throttle Position Actuator (EGRTP)
- EGRTP actuator wiring harness is open or short-circuited
- Poor electrical connection in the EGRTP actuator circuit
- Faulty Powertrain Control Module (PCM)
How to repair DTC P1334?
Check the “Possible Causes” listed above. Visually inspect the wiring harness and related connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
What are the possible symptoms of the code?
- Check Engine Light on (or Engine Maintenance Warning Light soon)
What does code P1334 mean?
The Exhaust Gas Recirculation (EGR) Throttle Position Actuator (EGRTP) changes the airflow into the intake manifold by controlling a throttle plate inside the throttle body. A Pulse Width Modulated (PWM) signal from the Powertrain Control Module (PCM) is used to control the rotational movement of the EGRTP actuator. The throttle plate position is determined by an input signal from the EGR Throttle Position Sensor (EGRTP). The EGRTP sensor is a rotary position sensor. A 5-volt reference voltage supplied by the PCM is used by the sensor to provide an input signal proportional to the throttle plate angle. The Diagnostic Trouble Code (DTC) is set when the EGR throttle closed position voltage is less than 3.83 volts or when the EGR throttle open position is greater than 0.93 volts during initial power-up.