Could it be the power control module pcm? 2006 chrysler 300c 5.7
With error code P0031,P0037,P0051,P0057 ALL 4 OXYGEN SENSORS P1521 INCORRECT Engine Oil Type P1128 - CLOSED LOOP FUELING NOT ACHIEVED - BANK 1 P1129 - CLOSED LOOP FUELING NOT ACHIEVED - BANK 2 Changed twice all sensors from dealer had new engine put on same codes come up
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The description for Diagnostic Trouble Code (DTC) P1521 is "Incorrect Engine Oil Type." The Powertrain Control Module (PCM) is able to identify engine oil viscosity using oil pressure and oil temperature sensor inputs and will set this DTC if the viscosity is determined to be incorrect. Engine oil viscosity could be incorrect due to the wrong engine oil being added or oil contamination (with fuel or coolant). This code could also be set if there is a problem with the engine's internal oil pressure. Lastly, this condition could also be caused by a PCM software issue. There appear to be two software updates to address the false detection of the P1521 DTC; they are on Technical Service Bulletins (TSBs) 18-008-08 and 18-035-05. If the software is already up-to-date, I would recommend starting with an oil change using oil with the correct viscosity. You can read about how to interpret engine oil labels (including viscosity rating) here: https://www.yourmechanic.com/article/how-to-read-a-motor-oil-label
There are two relays in the integrated power module under the hood in the engine compartment , radiator fan high/low control relay an radiator fan high relay . They are controlled by the front control module . The ECT - engine coolant temperature sensor is an input to the PCM -powertrain control module , this module has logic programmed into it an when it sees a signal from the ECT ,it knows what the temp. of the engine is ! At 195 to 223 degrees the PCM commands the cooling fans on ! I won't get into the whole thing of serial data communication networking but the PCM sends a command to the module that controls the cooling fans ! You best bet is to take it to the dealer or another repair facility that has the tools an knowledge to diagnose the problem ! Aren't electronics great !
it should be the o2 after cat converter ----and the following information courtesy of OBDP0037 HO2S Heater Control Circuit Low B1S2 OBD-II Trouble Code Technical Description Article by Dale Dale Toalston ASE Certified Technician Generic: HO2S Heater Control Circuit Low (Bank 1 Sensor 2) Nissan: Heated oxygen sensor (HO2S) 2 Bank 1 - heater voltage low What does that mean? Heated Oxygen sensors (HO2S) are inputs used by the PCM (Powertrain Control Module) to determine oxygen content in the exhaust system. Bank 1, sensor 2 refers to the second sensor back on bank 1. The PCM uses the information gained from the Bank 1,2 HO2S mainly to monitor the efficiency of the catalytic converter. Integral to this sensor is a heater element The PCM controls this heater to warm up the sensor to operating temperature. This allows the engine to enter closed loop faster and reduces emissions on cold startup. The PCM continuously monitors the heater circuits for abnormal voltages or in some cases, even amperages. Depending on the make of vehicle, the Oxygen sensor heater is controlled one of two ways. One way is that the PCM directly controls the voltage feed to the heater either directly or via a HO2S relay and a ground is supplied from the vehicle's common ground. The other way would be a fused 12 volt Battery feed (B+) that feeds 12 volts to the heater element anytime the ignition is on and the control of the heater is done by a driver in the PCM which controls the ground side of the heater circuit. Finding out which one you have is important because the PCM activates the heater under various circumstances. If the PCM detects an abnormally low voltage condition on the heater circuit, P0037 may set. Symptoms Symptoms of a P0037 DTC may include: Malfunction indicator lamp (MIL) illumination There will likely be no other symptoms Causes Potential causes of a P0037 trouble code may include: Bank 1,2 oxygen sensor heater element has failed Physical damage to heated oxygen sensor has occurred Control circuit (or voltage feed, depending on system) is shorted to ground PCM Oxygen sensor heater driver has failed === Possible Solutions== Do a visual inspection of the Bank 1,2 HO2S and wiring harness. If there is any damage to the sensor or any damage to the wiring, repair/replace as needed. Make sure wiring is routed away from exhaust. If all appears okay, unplug the Bank 1,2 HO2S and verify that there is 12 volts B+ present with the key on engine off, (or ground is present, depending on the system). Verify the heater control (ground) circuit is intact. If so, remove the o2 sensor and inspect for damage. If you have access to resistance specifications you can use a Ohmmeter to perform a resistance test of the heater element. Infinite resistance indicates an open in the heater. Replace the o2 sensor as necessary.
The code is for the heater in the O2 sensor bank one sensor two. That would be the sensor after the catalytic converter on bank one. It could be the sensor itself or the power supply for the heater.
your o2 sensor is bad. vsc will go on for any small DTC displayed on the MIL (cel)
P0037 LEXUS
P0037 LEXUS - Oxygen Sensor Heater Control Circuit Low Bank 1 Sensor 2
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible causes
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit open shorted to ground - Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit poor electrical connection - Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit - Heated Oxygen Sensor (H2OS) Bank 1 Sensor 2 circuit fuse - Faulty Engine Control Module (ECM)
When is the code detected?
The P0037 is set when the ECM detects an excessively low voltage through the heated oxygen sensor heater circuit
P0037 LEXUS Description
Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).
In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECMcontrols the heater element circuit by allowing current flow to ground.
The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.
Trouble code P0031 means: Oxygen Sensor Heater Control Circuit Low - Bank 1 Sensor 1 . Error code p0051:replace O2 sensor ($75-150 depending if OEM) before catalytic converter. need O2 socket ($10) to get at and tough to get to if vehicle isn't at least on a ramp.
Have you cleared the codes at least once?
The new o2 sensors should have removed all those codes.The sensor closest to the engine b1s1 may be defective.Check wiring and plug to that one closely.
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