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P00EB

Intake Air Temperature Sensor 3 Circuit High Bank 1.

  • Generic
  • Powertrain
  • Generic code
  • Low severity

How this code is built

P
SystemPowertrain
0
Defined bySAE, the same on every car
0
AreaFuel and air metering, auxiliary emission controls
EB
FaultThe specific fault in that area

What it means

P00EB is the generic code for a high input fault in the Intake Air Temperature Sensor 3 circuit on Bank 1. The control unit saw a signal voltage above the expected range, which points to a very low temperature reading, an open circuit or a short to voltage. Which position 'sensor 3' refers to varies by engine, so check the manufacturer's information for your model.

Symptoms

  • Engine warning light on
  • Hard or extended cranking when starting, especially from cold
  • Rough idle or hesitation
  • Poor fuel economy
  • Reduced power or the engine running in a fallback mode
  • Cooling fan or other temperature-based functions behaving oddly

Possible causes

  • Open circuit in the sensor signal or ground wire, or a damaged wirelikely
  • Poor connection at the sensor plug, such as corroded, loose or pushed-out terminalslikely
  • Faulty intake air temperature sensor reading out of rangelikely
  • Signal wire shorted to a voltage supplypossible
  • Fault in the sensor ground or reference supply shared with other sensorspossible
  • Internal fault in the engine control unitrare

How to diagnose

  1. Read all stored codes and freeze frame data to see engine temperature, load and conditions when the fault set, and note any other temperature sensor or reference voltage codes.
  2. Use the manufacturer's information to identify exactly which sensor is sensor 3 on Bank 1 for this engine and where it is fitted.
  3. Inspect the sensor, its plug and the wiring for damage, corrosion, chafing, heat damage and water ingress.
  4. With the engine cold, compare the live reading from this sensor with the other intake and coolant temperature readings; a large mismatch or an extreme cold reading suggests a fault.
  5. Unplug the sensor and check live data: a reading that stays at the extreme low-temperature value suggests the wiring up to the plug is open or the signal is stuck high, so check further.
  6. Measure the sensor resistance and compare it with the manufacturer's temperature specification.
  7. Test the signal and ground wires for continuity, and check for a short to voltage or poor ground between the sensor and control unit.
  8. Check the reference voltage and ground at the sensor plug to rule out a shared supply fault.

How to fix

  • Repair or replace damaged wiring and renew any faulty connector terminals.
  • Clean or repair a corroded or loose connector and secure it properly.
  • Replace the intake air temperature sensor if it is out of specification.
  • Repair the short to voltage or restore the ground or reference supply fault in the circuit.
  • Replace or repair the control unit only after all wiring and sensor faults have been ruled out and the manufacturer confirms the fault.

Can I keep driving?

Low severity

The car can normally be driven while you book it in, but watch for hard starting, poor running or reduced power. Fix it soon, as the control unit may be using estimated temperature values that affect fuelling and economy.

Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.