DTC P2187 System too lean at idle DETECTION CONDITION • The PCM monitors short term fuel trim (SHRTFT) and long term fuel trim (LONGFT) during closed loop fuel control during idle. If the LONGFT or the sum total of these fuel trims and correction exceed preprogrammed criteria, PCM determines that fuel system is…
Mazda DTC P2229 Diagnostic
DTC P2229 BARO sensor circuit high input DETECTION CONDITION • PCM monitors input voltage from BARO sensor. If input voltage at PCM terminal 1AG is above 4.43 V, PCM determines that BARO sensor circuit has malfunction. Diagnostic support note • This is a continuous monitor (CCM). • MIL illuminates if PCM detects the above malfunction condition…
Mazda DTC P2502 Diagnostic
DTC P2502 Charging system voltage problem DETECTION CONDITION • PCM judges generator output voltage is above 17 V or battery voltage is below 11 V during engine running. POSSIBLE CAUSE • Open circuit between generator terminal B and battery positive terminal • Battery malfunction • Generator malfunction • PCM is poorly connected • PCM, generator and/or battery are poorly connected Diagnostic…
Mazda DTC P0403 Diagnostic
DTC P0403 EGR valve (stepper motor) circuit problem DETECTION CONDITION • The PCM monitors the input voltage from EGR valve. If voltage at PCM terminals 2AU, 2AR, 2AY and/or 2AV remain low or high, the PCM determines that the EGR valve circuit has malfunction. Diagnostic support note • This is a continuous monitor (CCM)….
Mazda DTC P0703 Diagnostic
DTC P0703 Brake switch input circuit problem DETECTION CONDITION • The PCM monitors changes in input voltage from the brake switch. If the PCM does not detect PCM terminal 1AU voltage changes while alternately accelerating and decelerating 8 times, the PCM determines that brake switch circuit has malfunction. Diagnostic support note • This is a continuous…
Mazda DTC P2503 Diagnostic
DTC P2503 Charging system voltage low DETECTION CONDITION • PCM needs more than 20 A from generator, and judges generator output voltage to be below 8.5 V during engine running. POSSIBLE CAUSE • Generator malfunction • PCM and/or generator are poorly connected • Open and/or short to GND in wiring from between generator terminal P and PCM terminal 2AM • Open…
Mazda DTC P0661 Diagnostic
DTC P0661 Variable intake-air solenoid valve circuit low input DETECTION CONDITION • The PCM monitors the variable intake-air solenoid valve control signal at PCM terminal 2AJ. If the PCM turns variable intake-air solenoid valve off but voltage at PCM terminal 2AJ still remains low, the PCM determines that variable intake-air solenoid valve circuit…
Mazda DTC P2195 Diagnostic
DTC P2195 Front HO2S signal stuck lean DETECTION CONDITION • The PCM monitors the front HO2S output voltage when the following conditions are met. If output voltage is less than 0.45 V for 41 s, the PCM determines that the front HO2S signal remains lean. MONITORING CONDITION – Fuel injection control system status: feedback zone –…
Mazda DTC P2196 Diagnostic
DTC P2196 Front HO2S signal stuck rich DETECTION CONDITION • The PCM monitors the front HO2S output voltage when the following conditions are met. If output voltage is more than 0.45 V for 41 s, the PCM determines that the front HO2S signal remains rich. MONITORING CONDITION – Fuel injection control system status: feedback zone –…
Mazda DTC P1260 Diagnostic
DTC P1260 Immobilizer system problem DETECTION CONDITION • The instrument cluster detects an immobilizer system malfunction. Diagnostic support note • This is a continuous monitor (Other). • The MIL does not illuminate. • PENDING CODE is available if the PCM detects the above malfunction condition. • FREEZE FRAME DATA is available. • The DTC is not stored in…
Mazda DTC P2507 Diagnostic
DTC P2507 PCM B+ voltage low DETECTION CONDITION • The PCM monitors the voltage of back-up battery positive terminal at PCM terminal 1BA. If the PCM detected battery positive terminal voltage below 2.5 V for 2 s, the PCM determines that the backup voltage circuit has malfunction. POSSIBLE CAUSE • Melt down EEC fuse • Open circuit in…
Mazda DTC P2096 Diagnostic
DTC P2096 Target A/F feedback system too lean DETECTION CONDITION • The PCM monitors the target A/F fuel trim when under the target A/F feedback control. If the fuel trim is more than the specification, the PCM determines that the target A/F feedback system is too lean. Diagnostic support note • This is a…
Mazda DTC P2188 Diagnostic
DTC P2188 Fuel system too rich at idle DETECTION CONDITION • PCM monitors short term fuel trim (SHRTFT), long term fuel trim (LONGFT) during closed loop fuel control at idle. If the LONGFT or the sum total of these fuel terms exceed preprogrammed criteria. PCM determines that fuel system is too rich at…
Mazda DTC P2177 Diagnostic
DTC P2177 Fuel system too lean at off idle DETECTION CONDITION • PCM monitors short term fuel trim (SHRTFT), long term fuel trim (LONGFT) during closed loop fuel control at off-idle. If the LONGFT or the sum total of these fuel trims exceed preprogrammed criteria. PCM determines that fuel system is too lean…
Mazda DTC P0731 Diagnostic
DTC P0731 Gear 1 incorrect (incorrect gear ratio detected) DETECTION CONDITION • The PCM monitors the revolution ratio of the forward clutch drum revolution to differential gear case revolution when the following monitoring conditions are met. If the revolution ratio is below 2.16, the PCM determines that there is a malfunction. Monitoring condition: –…
P0441 Jeep OBD Code Diagnostic Procedure
P0441 Jeep OBD Code EVAP PURGE SYSTEM PERFORMANCE Theory of Operation The Evap Purge Monitor tests the integrity of the hoses/tube between the throttle body/intake and the fuel tank. The monitor is a two stage test and runs only after the Evap system passes the small leak test. Stage one is non-intrusive. The PCM monitors…
B1B83 Jeep OBD Code Diagnostic Procedure
B1B83 Jeep OBD Code PASSENGER SEAT WEIGHT SENSOR 4 – LEFT REAR INPUT CIRCUIT LOW When Monitored: While the CAN bus ignition status is in IGN_RUN, the module checks the sensor input ranges. Set Condition:If the module detects that the sensor input is less than 3.4 ?0.6% of the (R701) Seat Weight Sensor 5…
B2339 Jeep OBD Code Diagnostic Procedure
B2339 Jeep OBD Code Mirror SWITCH STUCK ?CLUSTER When Monitored: Continuously Set Condition:When the Cluster senses the Horn Switch input for over 30 seconds, this code will set. Possible Causes HORN SWITCH CLOCKSPRING (X3) HORN SWITCH SENSE CIRCUIT SHORTED TO GROUND (X3) HORN SWITCH SENSE CIRCUIT SHORTED TO (Y13) RADIO CONTROL RETURN INSTRUMENT…
P0882 Jeep OBD Code Diagnostic Procedure
P0882 Jeep OBD Code TCM POWER INPUT LOW Theory of Operation The Transmission Control Output circuit is used to supply power to the Transmission Solenoid/TRS Assembly and to the PCM when in normal operating mode. The purpose of the Transmission Output circuit is to allow the Transmission Control System to turn off the power to…
P0845 Jeep OBD Code Diagnostic Procedure
P0845 Jeep OBD Code 2C HYDRAULIC PRESSURE TEST Theory of Operation The Transmission Control System tests the pressure switches when they are off. The test verifies that the switches are operational (They will close with pressure applied). The Transmission Control System verifies that the switch closes when the corresponding element is applied. If a switch…