Powertrain, generic · Fuel and air metering, auxiliary emission controls
P00AB Intake Air Temperature Sensor 1 Circuit Range/Performance Bank 2
Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modeNo
Intake air temperature sensor 1 for bank 2 measures the intake air temperature in the second intake path, typically near the air filter or in the air flow meter of that bank, on engines with two separate intake paths. For P00AB, this is a plausibility check: at a start after a long standstill the sensor is compared with other temperature sensors (for example coolant temperature or the matching sensor of the other bank), which should then agree. Bank 2 codes occur only on engines with two separate intake or charge-air paths, one per cylinder bank.
Likely causes
Sensor drifting or coated with oil or soot
Contact resistance at the connector
Comparison sensor faulty
Engine block heater or auxiliary heater distorting the start comparison
Symptoms
- Check engine light on
- Usually no noticeable symptoms
- Emissions test or readiness check may fail
Repair estimate
DifficultyEasyDIY possible
Parts and labour€40–250
Time0.3–2 h
Typical range across vehicles; the real cost depends on what the testing finds.
Parts involved
intake air temperature sensor 1 bank2intake air temperature sensor wiring
Related codes
References: law.cornell.edu, static.nhtsa.gov, fordservicecontent.com.