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2001 Toyota Mr2 P1688 Fault Code Check

When you check 2001 Toyota Mr2 car engine light came on code P1688 the reason should be Engine Light ON (or Service Engine Soon Warning Light). However Toyota manufacturer may have a different definition for the P1688 OBD-II Diagnostic Powertrain (P) Trouble Code. So you should chech it on our car models.

P1688 2001 2001 Toyota Mr2 Code Clear

A good ground connection is also extremely important. P1688 2001 2001 Toyota Mr2 engine problem because the presence of voltage at the panel harness won't make the panel work if there is a bad ground connection. Since the instrument cluster is mounted in a plastic dash, a separate ground wire or ground circuit through the wiring harness is usually needed to complete the power circuit. Refer again to the wiring diagram to find the ground path, and then check it with your ohmmeter. Do not use a self-powered test light because it cannot measure resistance (any resistance will lower circuit voltage).

2001 Toyota Mr2 P1688 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P1688 Metering Oil Pump Stepping Motor Circuit Malfunction so you have to check ODB-II Fault Code Check list.

Reason For 2001 Toyota Mr2 P1688 Code

The reason of 2001 Toyota Mr2 P1688 OBD-II Fault Code Check is P1688 Metering Oil Pump Stepping Motor Circuit Malfunction.
P1688 Code Reason

2001 Toyota Mr2 P1688 Possibble Fix Ways :

Overheating can be caused by a few different factors. The simplest cause may be that your car needs more coolant. Yet depleted coolant can be caused by bigger problem, like leaks or faulty hoses, so always check for the underlying cause before simply filling it up with more. Another common reason for overheating may be that the radiator fan which keeps your engine cool is faulty, so check your fan motor connection and fan thermostat.

If your vehicle failed a P1688 2001 2001 Toyota Mr2 test and the P1688 Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses P1688 a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look P1688 2001 2001 Toyota Mr2: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression.

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