B1689 Mercedes-benz Slr Class OBD Code

OBD/2 B1689 error code description and symptoms.

The Throttle Position sensor signals the Engine Control Module as to the current position of the engine throttle valve.
The current throttle valve opening is based on the driver's input from the gas pedal. The ECM uses the information from this sensor to help calculate fuel delivery and spark timing.

As the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

B1689 Mercedes-benz Slr Class Error Code Repair Process :

If your vehicle failed a B1689 test and the B1689 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 b1689 autolamp delay circuit failure 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 b1689 autolamp delay circuit failure: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression. Use your OBD Express DIY to look at the oxygen sensor outputs, coolant temperature, airflow, calculated engine load, and inlet air temperature.

Common Causes of Mercedes-benz Slr Class B1689 OBD2 Code

A common cause of code B1689 is the failure of B1689 Autolamp Delay Circuit Failure, but there are several other possible causes as well, such as ;

Damaged ECM
Faulty Air fuel ratio (A/F) Sensor 1 Bank 1
Erratic camshaft position due to low oil pressure
Faulty Air Flow Meter

B1689 is a kind of Body Trouble Code

Auto body problems aren't always easy to spot. Diagnosing auto body problems sometimes requires a little know-how. In this section you'll find articles dedicated to teaching you how to diagnose auto body problems.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

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B1689 Mercedes-benz Slr Class OBD Code

B1689 Mercedes-benz Slr Class Error Code Repair Process :

Common Causes of Mercedes-benz Slr Class B1689 OBD2 Code

B1689 code for other Mercedes-benz cars