C1969 Mercedes B 160 OBD Code

OBD/2 C1969 error code description and symptoms.

Low Speed Fuel Pump Primary Circuit Malfunction The PCM monitors the low speed fuel pump (LFP) primary circuit output from the PCM.
The test fails if: When the LFP circuit is commanded on (grounded), excessive current draw is detected on the LFP circuit; or when the LFP circuit is commanded off, voltage is not detected on the LFP circuit (the PCM expects to detect VPWR voltage coming through the low speed fuel pump relay coil to the LFP circuit). Open or shorted low fuel pump (LFP) circuit Open VPWR to low speed fuel pump relay Damaged low speed fuel pump relay Damaged PCM An open circuit or short to ground can only be detected with the low speed fuel pump.

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code C1969, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code C1969 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

C1969 Mercedes B 160 Error Code Repair Process :

If your exhaust pressure control valve malfunction check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system C1969 and engine control unit are in charge of monitoring a bunch of different exhaust pressure control valve malfunction, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Mercedes B 160 C1969 OBD2 Code

A common cause of code C1969 is the failure of Exhaust Pressure Control Valve Malfunction, but there are several other possible causes as well, such as ;

EVAP canister or fuel tank leaks
Faulty Air fuel ratio (A/F) Sensor 1 Bank 1
Faulty starter motor
Open or short in the VCT circuit

C1969 is a kind of Chassis Trouble Code

Diagnosing chassis noises can be one of the most frustrating problems technicians face. Fortunately, manufacturers have engineered noise, vibration and harshness (NVH) diagnostic techniques and equipment to find the source of the noise.

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

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C1969 Mercedes B 160 OBD Code

C1969 Mercedes B 160 Error Code Repair Process :

Common Causes of Mercedes B 160 C1969 OBD2 Code

C1969 code for other Mercedes cars