Mazda 6 Service Manual: Dtc b1681

Dtc table

Note Perform the following if the security light stays on: - If gasoline engine stalls, go to symptom troubleshooting NO.11 ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES, BUCK/JERK, ...

Dtc b2103

Diagnostic procedure ...

Other materials:

Mazda 6 Service Manual: Nonreturn valve inspection
1. Remove the fuel pump unit. (See FUEL PUMP UNIT REMOVAL/INSTALLATION.) 2. Siphon the fuel from the fuel tank. Note Nonreturn valve is integrated in the fuel tank. The nonreturn valve is normally closed by the spring force. 3. Verify that the nonreturn valve is closed. If the nonretu ...

Mazda 6 Service Manual: Inspecting Engine Oil Level
1. Be sure the vehicle is on a level surface. 2. Warm up the engine to normal operating temperature. 3. Turn it off and wait at least 5 minutes for the oil to return to the oil pan. 4. Pull out the dipstick, wipe it clean, and reinsert it fully. 5. Pull it out again and examine the level. The ...