DTC P2252
DTC P2252 : A/F Sensor (Sensor 1) VS Circuit Low Voltage
| DTC Description | Confirmed DTC | Pending DTC |
|---|---|---|
| P2252 A/F Sensor (Sensor 1) VS Circuit Low Voltage |
DTC (PGM-FI)
- Problem verification
-1. Turn the vehicle to the ON mode.
-2. Clear the DTC with the HDS.
-3. Turn the vehicle to the OFF (LOCK) mode.
-4. Enter the maintenance mode, then start the engine .
-5. Hold the engine speed at 3000 RPM without load (in P or N) until the radiator fan comes on, then let it idle.
-6. Check for Pending or Confirmed DTCs with the HDS.
DTC Description Confirmed DTC Pending DTC P2252 A/F Sensor (Sensor 1) VS Circuit Low Voltage DTC (PGM-FI)
Is DTC P2252 indicated?
YES
The failure is duplicated. Go to step 2.
NO
Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the A/F sensor (Sensor 1) and the PCM. If the on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the on-board snapshot .
- Shorted wire check (VS line)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Jump the SCS line with the HDS, and wait more than 1 minute.
-3. Disconnect the following connectors.
PCM connector E (80P) A/F sensor (Sensor 1) 6P connector -4. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode A/F sensor (Sensor 1) 6P connector: disconnected PCM connector E (80P): disconnected Test point 1 PCM connector E (80P) No. 73 Test point 2 Body ground Is there continuity?
YES
Repair a short in the VS wire between the PCM (E73) and the A/F sensor (Sensor 1).
NO
Go to step 3.
- A/F sensor (Sensor 1) check
-1. Substitute a known-good A/F sensor (Sensor 1) .
-2. Reconnect all connectors.
-3. Exit the SCS mode with the HDS.
-4. Turn the vehicle to the ON mode.
-5. Reset the PCM with the HDS .
Reset PCM
-6. Enter the maintenance mode, then start the engine .
-7. Hold the engine speed at 3000 RPM without load (in P or N) until the radiator fan comes on, then let it idle.
-8. Check for Pending or Confirmed DTCs with the HDS.
DTC Description Confirmed DTC Pending DTC P2252 A/F Sensor (Sensor 1) VS Circuit Low Voltage DTC (PGM-FI)
Is DTC P2252 indicated?
YES
Check for any authorized service information related to the DTCs or symptoms you are troubleshooting, or substitute a known-good PCM , then recheck. If DTC P2252 goes away and the PCM was substituted, replace the original PCM .
NO