B1186 Mercedes A 140 OBD Code

OBD/2 B1186 error code description and symptoms.

Mass Air Flow (MAF) Sensor Intermittent The MAF sensor circuit is monitored by the PCM for sudden voltage (or air flow) input change through the comprehensive component monitor (CCM). If during the last 40 warm-up cycles in key ON engine running the PCM detects a voltage (or air flow) change beyond the minimum or maximum calibrated limit, a continuous memory diagnostic trouble code (DTC) is stored.

At this point we are assuming that the fuses and relays are good. You will need to locate the PCM/TCM and the power input signal circuit using your vehicle information source. Unplug the connector from the PCM/TCM, place the ignition switch in the ON position, and probe the appropriate circuit with the positive test lead of the DVOM.

B1186 Mercedes A 140 Error Code Repair Process :

The rule of B1186 code when it comes to emissions-related vehicle repair is that any modification that changes the vehicle from a certified configuration to a non-certified configuration is considered tampering: this applies to both vehicle owners and repair facilities and is, therefore, a Federal offense. Replacing a catalyst with a straight pipe is one traditional example of passenger door ajar circuit short to battery. Likewise, overriding the OBD B1186 error in system through the use of high-tech defeat devices or non-certified computer chips, for example, would also be considered tampering. The OBD system may, however, be repaired back to its original certified configuration with certified performance chips or appropriate aftermarket parts.

Common Causes of Mercedes A 140 B1186 OBD2 Code

A common cause of code B1186 is the failure of Passenger Door Ajar Circuit Short To Battery, but there are several other possible causes as well, such as ;

Damaged camshaft position (CMP) sensor
Faulty Air Flow Meter
1Camshaft Position Sensor circuit poor electrical connection
Oil flow restriction in the oil passages or the variable camshaft timing (VCT) valve body

B1186 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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B1186 Mercedes A 140 OBD Code

B1186 Mercedes A 140 Error Code Repair Process :

Common Causes of Mercedes A 140 B1186 OBD2 Code

B1186 code for other Mercedes cars