P050A

DTC P050A / P050B

DTC Detecting Condition and Trouble Area






DTC Confirmation Procedure

NOTE:

- Be sure to troubleshoot first unexpected DTCs previously detected in "DTC Confirmation Procedure".
- Confirm that the following conditions are met in this "DTC Confirmation Procedure".

- -10 °C (14 °F) <= ECT at engine started < 40 °C (104 °F)

- -10 °C (14 °F) < =ECT < 40 °C (104 °F)

- -10 °C (14 °F) <= IAT < 40 °C (104 °F)

- BARO > 75 kPa (0.8 kgf/cm2, 10.8 psi, 0.75 bar)

- DTC P0506 or P0507 is not detected (P050A).

1) Run engine at idle speed for 1 min.

DTC Troubleshooting


1. Was "Engine Basic Inspection" performed?
YES
Go to Step 2.
NO
Go to Engine Basic Inspection Engine Basic Inspection.
2. Was "Engine and Emission Control System Check" performed?
YES
Go to Step 3.
NO
Go to Engine and Emission Control System Check Engine and Emission Control System Check.
3. Air intake system check
Check air intake system for clogging and air inhabit.
Is it in good condition?
YES
Go to Step 4.
NO
Repair or replace defective parts.
4. PCV system check
Check PCV system parts or system.
PCV valve: Service and Repair
PCV hose: Testing and Inspection
Are they in good condition?
YES
Go to Step 5.
NO
Repair or replace defective parts.
5. Exhaust system check
Check exhaust system. Exhaust System Check
Is it in good condition?
YES
Go to Step 6.
NO
Repair or replace defective parts.
6. Throttle body assembly check
Check throttle body assembly. Testing and Inspection
Is it in good condition?
YES
Go to Step 7.
NO
Replace throttle body assembly. Throttle Body Assembly Removal and Installation
7. ECT sensor circuit and performance check
Check ECT sensor for circuit and performance according to Step 3 and 4 of P0116 DTC P0116 / P0125 / P0128.
Is it in good condition?
YES
Go to Step 8.
NO
Repair or replace defective parts of wire harness.
8. Ignition system check
Check ignition system parts or system.
Ignition system: Ignition System Check
Ignition spark: Ignition Spark Test
Ignition timing: Testing and Inspection
Are they in good condition?
YES
Go to Step 9.
NO
Repair or replace defective parts.
9. EVAP system check
Check EVAP system parts or system. EVAP Canister Purge System Inspection
Are they in good condition?
YES
Go to Step 10.
NO
Repair or replace defective parts.
10. Engine mechanical system check
Check engine mechanical parts or system.
Engine compression: Testing and Inspection
Engine vacuum: Testing and Inspection
Valve clearance: Service and Repair
Valve timing: Timing Chain and Chain Tensioner Removal and Installation
Are they in good condition?
YES
Replace ECM and recheck DTC. Service and Repair
NO
Repair or replace defective parts.