U1121 Peugeot 204 OBD Code

OBD/2 U1121 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.

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code U1121, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code U1121 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

U1121 Peugeot 204 Error Code Repair Process :

If your u1121 scp (j1850) invalid or missing data for primary id 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 U1121 and engine control unit are in charge of monitoring a bunch of different u1121 scp (j1850) invalid or missing data for primary id, and if they get a reading that's a little out of whack, up pops the check engine light.

Common Causes of Peugeot 204 U1121 OBD2 Code

A common cause of code U1121 is the failure of U1121 SCP (J1850) Invalid or Missing Data for Primary Id, but there are several other possible causes as well, such as ;

Damaged camshaft position (CMP) sensor
Faulty front heated oxygen sensor
Faulty starter motor
Faulty variable valve timing (VVT)

U1121 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.

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

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U1121 Peugeot 204 OBD Code

U1121 Peugeot 204 Error Code Repair Process :

Common Causes of Peugeot 204 U1121 OBD2 Code

U1121 code for other Peugeot cars