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Discussion Starter · #1 ·
Hey all,

my daughter owns a 2013 Dart 1.4 with 35,000 miles. It’a been pretty good so far but the CEL has been popping up for her. Today I pulled the codes and quite a few came back. Most seem turbo/air related. Any ideas where to start?

also noticed oil leaking from cylinder 4 coil pack. Thinking some kind of seal or o-ring.

appreciate any insight, thanks in advance
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Clean the MAP sensor. Check wiring with a multimeter.
The oil is the O-ring for the PCV oil separator. Search.

28 - DTC-Based Diagnostics / MODULE, Powertrain Control (PCM) / Diagnosis and Testing

P0069-00-MANIFOLD PRESSURE/BAROMETRIC PRESSURE CORRELATION

When Monitored and Set Conditions

When Monitored: This diagnostic runs one time during an ignition cycle when the following conditions are met:

•With the ignition on.
•During engine cranking.
•No Manifold Absolute Pressure Sensor (MAP) or Barometric Pressure Sensor (BARO) DTC’s present.

Set Conditions:

•The Powertrain Control Module (PCM) performs the following rationality tests to check the Manifold Air Pressure Sensor and Barometric Pressure Sensor: At PCM power-up, the manifold pressure is compared with barometric pressure. If the two do not correlate and it cannot be determined which sensor is faulty, then this code is reported.

Default Actions:

•The MIL light will illuminate.

Possible Causes

MAP SENSOR
BAROMETRIC SENSOR INTERNAL TO THE POWERTRAIN CONTROL MODULE (PCM)





28 - DTC-Based Diagnostics / MODULE, Powertrain Control (PCM) / Diagnosis and Testing

P1185-00-GENERAL PRESSURE SENSOR CORRELATION

When Monitored and Set Conditions

When Monitored: This diagnostic runs continuously with the ignition on.

Set Conditions:

•The Powertrain Control Module (PCM) compares the Boost Pressure Sensor, MAP Sensor and BARO Sensor values, if two sensors are within a specific range of each other and the other is not, the value outside of the specified range is declared irrational.

Default Actions:

•The MIL light will illuminate.

Possible Causes

BOOST PRESSURE SENSOR, WIRING, OR CONNECTORS
MAP SENSOR, WIRING, OR CONNECTORS
POWERTRAIN CONTROL MODULE (PCM)





28 - DTC-Based Diagnostics / MODULE, Powertrain Control (PCM) / Diagnosis and Testing

P2175-00-THROTTLE ACTUATOR CONTROL SYSTEM - LOW AIR FLOW DETECTED

When Monitored and Set Conditions

When Monitored: This diagnostic runs continuously when the following conditions are met:

•With the engine running.
•When the short term fuel trim is between 17% and (-22)%.
•No Throttle Position Sensor DTCs active.

Set Conditions:

•The Powertrain Control Module (PCM) compares the MAP Sensor actual to the MAP Sensor model and determines that the intake system vacuum is higher than expected.

Default Actions:

•The MIL light will illuminate.

Possible Causes

AIR INTAKE SYSTEM OBSTRUCTION
EXCESSIVE RESISTANCE IN THE MAP SENSOR CIRCUITS
EXCESSIVE RESISTANCE IN THE THROTTLE POSITION SENSOR CIRCUITS
MAP SENSOR
THROTTLE POSITION SENSOR/THROTTLE BODY
POWERTRAIN CONTROL MODULE (PCM)





28 - DTC-Based Diagnostics / MODULE, Powertrain Control (PCM) / Diagnosis and Testing

P2227-00-BAROMETRIC PRESSURE CIRCUIT PERFORMANCE

When Monitored and Set Conditions

When Monitored: This diagnostic runs continuously when the following conditions are met:

•With the key on.
•No battery related DTC present.

Set Conditions:

•The Powertrain Control Module (PCM) detects that the Barometric pressure value differs from the other pressure sensors by a calibrated amount.
◦The barometric pressure measures atmospheric pressure. The sensor is part of the Powertrain Control Module (PCM) and is not replaceable separately.

Default Actions:

•The MIL light will illuminate.

Possible Causes

POWERTRAIN CONTROL MODULE (PCM)




28 - DTC-Based Diagnostics / MODULE, Powertrain Control (PCM) / Diagnosis and Testing

P2261-00-TURBOCHARGER BYPASS VALVE - MECHANICAL
Rectangle Slope Font Parallel Diagram

Theory of Operation

When the accelerator is closed suddenly, excessive boost pressure can build up between the Turbocharger and the Throttle Body which can cause damage to the Turbocharger. This can occur because the compressed air created by the Turbocharger has no place to go. This results in compressor surge. The Powertrain Control Module (PCM) detects this pressure increase via input from the Boost Pressure Sensor. The Boost Pressure Sensor operates as a typical three wire sensor. The PCM provides a 5-volt supply and sensor return circuit to the Boost Pressure Sensor and receives a feedback voltage on the signal circuit. The Turbocharger Surge Valve is responsible for venting the boost pressure between the Turbocharger and Throttle Body during sudden deceleration. The Turbocharger Surge Valve is normally spring loaded closed. When the PCM receives an input signal from the Boost Pressure Sensor that the pressure is above a calibrated amount, the PCM grounds the Turbocharger Surge Valve Control circuit which electrically opens the valve and routes the excess pressure between the Turbocharger and the Throttle Body back to the inlet of the Turbocharger, relieving the pressure and preventing compressor surge.

When Monitored and Set Conditions

When Monitored: This diagnostic runs continuously when the following conditions are met:

•With the engine running.
•With the Turbocharger Surge Valve commanded open.
•No DTCs pending for:
◦Turbocharger Surge Valve
◦Wastegate Solenoid
◦Boost Pressure Sensor

Set Conditions:

•A fault is set when the Powertrain Control Module (PCM) detects ten or more surge pulsations

Default Actions:

•The MIL light will illuminate.

Possible Causes

BOOST PRESSURE SENSOR, WIRING, OR RELATED CONNECTORS
TURBOCHARGER SURGE VALVE, WIRING, OR RELATED COMPONENTS
 

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Discussion Starter · #3 ·
Thank you very much. I’ll start with the MAP sensor and move on to the PCM if needed
 
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