Category: Mazda

DTC P0758     Shift solenoid B malfunction (electrical)   DETECTION CONDITION • If the PCM detects either of the following conditions, the PCM determines that shift solenoid B circuit has a malfunction. – Shift solenoid B voltage stuck at B+ after engine start – Shift solenoid B voltage stuck at 0 V after engine start Diagnostic support note: • This…

DTC P0734     Gear 4 incorrect (incorrect gear ratio detected)   DETECTION CONDITION • The PCM monitors revolution ratio of the forward clutch drum revolution to the differential gear case revolution when the following monitoring conditions are met. If the revolution ratio is below 0.6 or 1.25 or more, the PCM determines that there is a…

DTC P0121     TP sensor stuck closed   DETECTION CONDITION • If the PCM detects that the throttle valve opening angle is below 12.5% for 5 s after following conditions are met, the PCM determines that the TP is stuck closed: MONITORING CONDITION – Engine coolant temperature is above 70 °C {158 °F}. – MAF sensor signal is above 32.0 g/s {4.2 lb/min.}….

DTC P0610     PCM vehicle options error   DETECTION CONDITION • PCM data configuration error. Diagnostic support note • This is a continuous monitor (CCM). • The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle. • PENDING CODE is available if the PCM detects the above malfunction condition. • FREEZE FRAME DATA…

DTC P0328   KS circuit high input   DETECTION CONDITION • The PCM monitors the input signal from the KS when the engine is running. If the input voltage at PCM terminals between 2Q and 2R is above 4.9 V, the PCM determines that KS circuit has a malfunction. Diagnostic support note • This is a continuous monitor…

DTC P0850     Neutral switch input circuit problem   DETECTION CONDITION • The PCM monitors changes in input voltage from the neutral switch. If the PCM does not detect PCM terminal 1S voltage changes while running vehicle with vehicle speed above 30 km/h {19 mph} and clutch pedal turns press and depress 10 times repeatedly, the PCM determines that…

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…

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…

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…

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)….

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…

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…

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…

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 –…

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 –…

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…

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…

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…

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…

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…