Fuel and air

P00ED — Intake Air Temperature Sensor 3 Circuit, Bank 2 Fault

Severity: medium Drive with care, to a shop

What P00ED means

The engine control module monitors the signal from intake air temperature (IAT) sensor 3 on bank 2, found on V-type and flat engines. The sensor is a thermistor whose resistance changes with temperature, and the ECM uses its signal to estimate air density and adjust fuel delivery and spark timing. P00ED is stored when the signal is out of range or does not make sense compared with expected values.

Symptoms

  • Check engine light on
  • Hesitation or poor performance
  • Rough idle
  • Possible drop in fuel economy
  • Reduced power
  • Hard starting (rare, with a badly skewed signal)

Possible causes

  1. Failed intake air temperature sensor 3 (bank 2)
  2. Damaged wiring: open circuit, short to ground or to voltage
  3. Corroded or loose pins in the sensor connector
  4. Water or oil contamination in the connector
  5. Faulty ECM input circuit (uncommon)

How to diagnose

  1. Scan for all codes and freeze frame data, and look for other IAT or airflow codes
  2. Check the wiring diagram to find which sensor is IAT 3 and what bank 2 is on this engine
  3. Inspect the connector and harness for chafing, corrosion and oil contamination
  4. On a cold engine, read the sensor value with a scan tool: it should be close to ambient and to other temperature sensors
  5. Unplug the connector and watch the reading change to its extreme value; jumpering the pins should push it the other way, which shows where the fault is
  6. Measure sensor resistance and compare it to the spec chart at a known temperature
  7. Test the signal and ground wires back to the ECM and check the 5 V reference
  8. If wiring and sensor are fine, test the ECM

Common fixes

  • Replace intake air temperature sensor 3
  • Repair or replace the damaged wiring harness
  • Clean or replace the connector and terminals
  • Repair or replace the ECM and program it if needed (rare)

Questions and answers

What does P00ED mean?

It indicates a problem in the circuit of intake air temperature sensor 3 on bank 2. The ECM sees a signal outside the normal range and can't calculate the air-fuel mixture accurately.

Can I drive with code P00ED?

Short, careful trips are usually OK, but you may notice hesitation, rough running and higher fuel use. Have the circuit diagnosed soon.

How do I fix P00ED?

Start with the connector and wiring, then test the sensor's resistance. Replacing the sensor or repairing the harness fixes most cases.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.