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101 results
Showing matches for "Mercedes-Benz S-Class".
C0035: Left front wheel-speed sensor circuit
The ABS module sees an implausible or missing signal from the left front wheel-speed sensor circuit.
C0040: Right front wheel-speed sensor circuit
The ABS module sees an implausible or missing signal from the right front wheel-speed sensor circuit.
C1112: ABS pump motor or supply circuit fault
The brake-control module detects a fault in the ABS pump motor circuit or its power supply.
C1130: Chassis control or suspension pressure fault
A chassis or suspension control module has detected an implausible pressure, height, or control-state condition.
P0030: Heated oxygen sensor heater control circuit, bank 1 sensor 1
The ECU detects an electrical fault in the heater circuit for the upstream oxygen sensor.
P0118: Engine coolant temperature sensor circuit high
The coolant-temperature signal is implausibly high voltage, often read by the ECU as extremely cold coolant.
P0128: Coolant thermostat below regulating temperature
The engine is taking too long to reach expected operating temperature or is running cooler than the ECU expects.
P0130: Oxygen sensor circuit malfunction, bank 1 sensor 1
The upstream oxygen or lambda sensor signal is implausible, missing, or outside the control range expected by the ECU.
P0135: Oxygen sensor heater circuit, bank 1 sensor 1
The upstream oxygen sensor heater circuit is not operating as expected.
P0141: Oxygen sensor heater circuit, bank 1 sensor 2
The downstream oxygen sensor heater circuit is not reaching expected operation.
P029E: NOx sensor 2 circuit range / performance
The downstream NOx sensor signal is outside the range expected by the SCR system.
P0300: Random / multiple-cylinder misfire
Misfires are occurring across more than one cylinder or without one consistent cylinder pattern.
P0301: Cylinder 1 misfire detected
The ECU detected repeated combustion misfires on cylinder 1.
P0302: Cylinder 2 misfire detected
The ECU detected repeated combustion misfires on cylinder 2.
P0303: Cylinder 3 misfire detected
The ECU detected repeated combustion misfires on cylinder 3.
P0304: Cylinder 4 misfire detected
The ECU detected repeated combustion misfires on cylinder 4.
P0305: Cylinder 5 misfire detected
The ECU detects repeated combustion failure specifically on cylinder 5.
P0335: Crankshaft position sensor circuit
The ECU is missing or cannot trust the crankshaft position signal.
P0340: Camshaft position sensor circuit, bank 1
The ECU is missing or cannot trust the camshaft position signal on bank 1.
P0411: Secondary-air injection incorrect flow
The ECU does not see the expected oxygen-sensor response when the secondary-air system runs on cold start.
P0420: Catalyst efficiency below threshold, bank 1
Upstream and downstream oxygen-sensor behavior suggests insufficient catalyst oxygen-storage performance.
P0471: Exhaust pressure sensor range / performance
The exhaust-pressure sensor signal is implausible for engine load, speed, and DPF pressure conditions.
P0501: Vehicle speed sensor range / performance
Vehicle speed information is implausible compared with wheel speed, gearbox, or engine operating data.
P0544: Exhaust-gas temperature sensor circuit, bank 1 sensor 1
The ECU sees an electrical fault in an exhaust-temperature sensor used to protect the turbo and emissions system.
P0641: Sensor reference voltage A circuit open
A shared 5-volt reference circuit for engine sensors is missing, shorted, or pulled out of range.
P0700: Transmission control system requested warning
The engine controller has been told by the transmission controller that a gearbox-related fault is present.
P0706: Transmission range sensor circuit range / performance
The selected gear or park/neutral signal is implausible for the transmission's actual state.
P0715: Input / turbine speed sensor circuit
The transmission controller cannot trust the input or turbine speed signal.
P0720: Output speed sensor circuit malfunction
The transmission controller does not receive a plausible output shaft speed signal.
P0741: Torque converter clutch stuck off / performance
The torque converter clutch is not locking as expected or slip remains too high.
P0750: Shift solenoid A malfunction
The transmission controller detected an electrical or hydraulic problem with shift solenoid A.
P0780: Shift malfunction
The transmission controller detected a shift event that did not match the commanded gear change.
P0793: Intermediate shaft speed sensor circuit no signal
The transmission controller cannot see the expected intermediate shaft speed signal.
P0868: Transmission fluid pressure low
The transmission controller sees lower hydraulic pressure than required for reliable clutch or gear operation.
P204F: Reductant system performance
The reductant system is not meeting the performance expected by the emissions controller.
P20EE: SCR NOx catalyst efficiency below threshold
The SCR system is not reducing NOx emissions as effectively as the ECU expects.