P0110 (blink 24, 1ZZ) on Toyota Corolla E120: INTAKE AIR TEMP. CIRCUIT MALFUNCTION
Short answer: P0110 means “INTAKE AIR TEMP. CIRCUIT MALFUNCTION”. The car’s computer has found a fault in the EFI 1ZZ-FE system and turns on the Malfunction indicator lamp (Check Engine). First check: workshop check order (RM821E): READ VALUE OF INTAKE AIR TEMPARATURE -> CHECK HARNESS AND CONNECTOR(CHECK FOR OPEN) -> INSPECT ECU(CHECK FOR OPEN) -> CHECK HARNESS AND CONNECTOR(CHECK FOR SHORT) -> INSPECT ECU(CHECK FOR SHORT) -> INSPECT ECU(ENGINE ECU CONNECTOR) -> CHECK INTAKE AIR FLOW METER SUB−ASSY -> CHECK HARNESS AND CONNECTOR(ENGINE ECU CONNECTOR−AIR FLOW.
- Code
- P0110 · blink 24
- System
- EFI 1ZZ-FE
- Dashboard light
- Malfunction indicator lamp (Check Engine)
- Applies to
- 1ZZ-FE 1.8 (PK Altis 2005-08 ZZE122; JDM ZZE122/124, Allex/Runx/Fielder 1.8)
- Confidence
- high (official Toyota RM821E)
- Source
- toyotamanuals.gitlab.io
Symptoms and when it is set
- Open or short in intake air temp. sensor circuit
Likely causes
- Open or short in intake air temp. sensor circuit; Intake air temp. sensor (inside air flow meter); Engine ECU
What to check, in order
- Workshop check order (RM821E): READ VALUE OF INTAKE AIR TEMPARATURE -> CHECK HARNESS AND CONNECTOR(CHECK FOR OPEN) -> INSPECT ECU(CHECK FOR OPEN) -> CHECK HARNESS AND CONNECTOR(CHECK FOR SHORT) -> INSPECT ECU(CHECK FOR SHORT) -> INSPECT ECU(ENGINE ECU CONNECTOR) -> CHECK INTAKE AIR FLOW METER SUB−ASSY -> CHECK HARNESS AND CONNECTOR(ENGINE ECU CONNECTOR−AIR FLOW
Related on this car
Same code on other cars
- P0110 · Toyota Passo (1st gen)
- P0110 · Toyota Vitz (1st gen)
- P0110 · Toyota Corolla (11th gen, E170)
- P0110 · Toyota Corolla (10th gen, E140)
- P0110 · Honda City (5th gen, GM2)
- P0110 · Honda Civic (10th gen, FC)
- P0110 · Suzuki Wagon R (Pakistan, K10B)
- P0110 on all cars compared
Clearing the code does not fix the fault. If it comes back, the problem is still there. For brakes, airbags and steering, see a trained mechanic.