DTC P2261

DTC P2261  : Turbocharger Bypass Control Valve Stuck Closed

Special Tools Required 

Vacuum Pump/Gauge, 0-30 inHg Snap-on YA4000A or equivalent, commercially available 

NOTE:  Before you troubleshoot, review the general troubleshooting information .

DTC (PGM-FI)

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Clear the DTC with the HDS.

   Clear DTC

   -3. Start the engine.

   -4. Hold the engine speed at 3, 000 rpm without load (in neutral) until the radiator fan comes on.

   Test-drive the vehicle for several minutes in the range of these recorded on-board snapshot parameters:

   • Engine Speed
   • Vehicle Speed
   • MAP Sensor (Hi Res)
   • REL TP Sensor
   • ECT Sensor 1
   • IAT Sensor (1)

   On-board Snapshot

   Signal	Current conditions
   	Values	Unit
   Engine Speed
   Vehicle Speed
   MAP Sensor (Hi Res)
   REL TP Sensor
   ECT Sensor 1
   IAT Sensor (1)

   -6. Check for Pending or Confirmed DTCs with the HDS.

   DTC Description	Confirmed DTC	Pending DTC
   P2261 Turbocharger Bypass Control Valve Stuck Closed

   Is DTC P2261 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 turbocharger bypass control solenoid valve 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 .

2. Turbocharger bypass control solenoid valve operation check

   -1. Select the TC BYPASS CONTROL SOL.V TEST in the INSPECTION MENU with the HDS.

   TC BYPASS CONTROL SOL.V TEST

   Is there a clicking noise from the turbocharger bypass control solenoid valve?

   YES 

   Go to step 3.

   NO 

   Replace the turbocharger bypass control solenoid valve .

3. Determine possible failure area (vacuum hose or turbocharger bypass control solenoid valve, others)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Disconnect the hose (A) from the turbocharger bypass control valve (B), and connect the vacuum pump/gauge, 0-30 inHg, to the hose.

   Courtesy of HONDA, U.S.A., INC.

   -3. Start the engine.

   Is there vacuum?

   YES 

   Go to step 4.

   NO 

   Check the vacuum hose routing, clogging, or restriction between the turbocharger bypass control solenoid valve and the following parts. If they are OK, replace the turbocharger bypass control solenoid valve .

   • Turbocharger bypass control valve
   • Turbocharger
   • Intake manifold
4. Turbocharger bypass control valve check

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Inspect the turbocharger bypass control valve .

   Is the valve OK?

   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 P2261 goes away and the PCM was substituted, replace the original PCM .

   NO 

   Replace the turbocharger .