Tech Tip: Hyundai Fail Safe Mode/Erratic, Hard Shifting/DTCs Set
An improperly functioning pulse generator on a 1996-2000 Elantra, 1997-2001 Tiburon or 1996-2004 Accent may result in the following conditions (Note: These conditions may be intermittent and difficult to duplicate.) • Diagnostic Trouble Codes: – P0717 – No pulse generator-A signal; – P0722 – No pulse generator-B signal; – P1624 – MIL-on request from TCM;
Tech Tip: Honda CR-V Has MIL On and DTCs P0451, P0452, P0453 or P1454
Having the MIL On and DTCs P0451, P0452, P0453 or P1454 stored on a Honda CR-V may be the result of the fuel tank pressure sensor having an internal malfunction. This Tech Tip provides information to correct this condition.
BMW Control Systems: DSCs, DTCs and DBCs Dial in ABS, Handling and Traction
Automotive technology continues to evolve in
Tech Tip: Servicing Nissan with MIL On and O2 Sensor DTCs Set
If an applicable vehicle shows the MIL on and one or more of the following DTCs are stored in the ECM, then use the Service Procedure to diagnose and
Tech Tip: Nissan Altima, Sentra with MIL On and DTCs P0100/ P0102/P1102 Stored
If you confirm that an applied vehicle has DTCs P0100/P0102/P1102 stored and may also exhibit a rough-running engine, slight engine speed variation while driving or low engine power, follow the procedures outlined below.
Tool Tip: Intermittent Chuggle/No DTCs Set
Some customers may comment on an intermittent chuggle or fishbite on light acceleration or at steady-state highway speeds (typically 50-65 mph) with no PCM DTCs set. This condition may lead the technician to suspect the TCC circuit or torque converter. This condition may be caused by intermittent operation of the Throttle Position (TPS) Sensor.
Toyota Tech Tip: MIL On, Misfire DTCs Set on 1MZ-FE Engines
Some vehicles equipped with 1MZ-FE (V6) engines without VVTi may exhibit a rough idle and/or an MIL-on condition with a diagnostic trouble code or codes for misfire caused by an improperly operating ignition coil assembly. Production changes have been implemented to prevent this condition from occurring.
Catalytic Converter Tech Feature: Diagnosing P0420 or P0430 DTCs
Although modern OBD II technology has simplified catalytic converter diagnostics, it’s still important to understand the basics of catalytic converter operation when dealing with a P0420 or P0430 DTC. Gary Goms explores the basics of catalytic converter chemistry and summarizes how common converter failures can be diagnosed.
No Movement on Saturn, Possible DTCs Set
Some customers may comment on the vehicle not moving in the “D” (Drive) or “R” (Reverse) gear selection positions. In many cases, the transaxle will also produce an audible grind or whine noise when attempting to operate the vehicle in drive or reverse.
Tech Tip: Chrysler Intrepid Won’t Shift, DTCs Set
Automatic overdrive transmission goes into second gear (limp-in mode) and will not shift, and trouble codes for the transmission solenoid pack are stored in memory.