U229A Mercedes Slk OBD Code

OBD/2 U229A error code description and symptoms.

Throttle Position (TP) Sensor Intermittent The TP sensor circuit is monitored by the PCM for sudden TP rotation angle (or voltage) input change through the comprehensive component monitor (CCM). If during the last 80 warm-up cycles in key ON engine running the PCM detects a TP rotation angle (or voltage) changes beyond the minimum or maximum calibrated limit, a continuous diagnostic trouble code (DTC) is stored. Poor continuity through the TP sensor connectors Poor continuity through the TP harness Intermittent open or short inside the TP sensor While accessing the TP V PID on the scan tool, lightly tap on the TP sensor or wiggle the TP sensor connector and harness.

Circuit High Input codes like U229A are mostly caused by defective alternators that develop excessive voltages, although there may be other causes as well, such as short circuits that 'leak' current into a particular system from other, unrelated systems that work on higher voltages. Note that in the case of short circuits that leak power into a control circuit, there is likely to be other, seemingly unrelated trouble codes present along with the code(s) being investigated. Diagnosing a 'high input' code will always involve a thorough testing of the charging system as a first step, followed by measures to isolate the system from all other possible sources of power during resistance, continuity, and reference voltage tests.

U229A Mercedes Slk Error Code Repair Process :

If your speed wheel sensor rf input short circuit to battery 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 U229A and engine control unit are in charge of monitoring a bunch of different speed wheel sensor rf input short circuit to battery, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Mercedes Slk U229A OBD2 Code

A common cause of code U229A is the failure of Speed Wheel Sensor RF Input Short Circuit To Battery, but there are several other possible causes as well, such as ;

Damaged VCT phaser
Faulty Crankshaft Position Sensor (POS)
Clogged or faulty fuel injector (s)
Faulty Air fuel ratio (A/F) Sensor 1 Bank 1

U229A is a kind of Network Trouble Code

U-code indicates that engine communication errors and shows lost communication with engine parts.U-Codes are fairly straight forward, given all of the articles and technical publications that have been written regarding these problematic codes. In most cases, it just comes down to identifying the module that isn't communicating with the other modules on the CAN bus line for whatever reason.

U229A Mercedes Slk OBD Code

U229A Mercedes Slk Error Code Repair Process :

Common Causes of Mercedes Slk U229A OBD2 Code

U229A code for other Mercedes cars