P1103 Mass air flow (MAF) sensor in range but higher than expected DETECTION CONDITION • The PCM compares actual input from MAF sensor with expected MAF amount that PCM calculates by engine running condition. If the actual MAF signal is excessive higher than expected value, the PCM determines that the MAF sensor signal is higher than…
Mazda Factory OBD-II DTC P1145 Code Diagnostic Procedure
P1145 Calculated torque error DETECTION CONDITION • Base torque map – Not plausible POSSIBLE CAUSE • Erratic signal from fuel pressure sensor • Fuel injector malfunction • Fuel metering control valve malfunction • Fuel leakage or clogging in fuel system • Fuel injection control improper operation • Turbo charging system improper operation • Engine malfunction (low compression or excessive friction loss) • Fuel limiter…
Mazda Factory OBD-II DTC P115A Code Diagnostic Procedure
P115A Low fuel level – forced limited power DETECTION CONDITION • The PCM compares the calculated engine torque based on the engine rotation fluctuation from the engine operating condition and on the CKP signal fluctuation. If these calculated engine torque difference is above specified when the fuel level signal from the instrument cluster is low, the…
Mazda Factory OBD-II DTC P115B Code Diagnostic Procedure
P115B Low fuel level – forced engine shutdown DETECTION CONDITION • The PCM compares the calculated engine torque based on the engine rotation fluctuation from the engine operating condition and on the CKP signal fluctuation. If these calculated engine torque difference is excessive when the fuel level signal from the instrument cluster is low, the PCM…
Mazda Factory OBD-II DTC P115D Code Diagnostic Procedure
P115D Mass air flow (MAF) sensor signal offset DETECTION CONDITION • The PCM monitors MAF signal using the MAF sensor. If the MAF sensor signal is lower or higher than threshold when the engine shut down, the PCM determines that the MAF sensor signal offset error. POSSIBLE CAUSE • Contaminants on MAF sensor • MAF sensor malfunction • PCM…
Mazda Factory OBD-II DTC P0691 Code Diagnostic Procedure
P0691 Fan control module circuit low input DETECTION CONDITION • The PCM monitors the fan control module signal. If the voltage at PCM terminal 318 remains low, the PCM determines that there is a fan control module circuit problem. POSSIBLE CAUSE • Fan control module malfunction • Short to ground in the wiring harness between fan control module…
Mazda Factory OBD-II DTC P0692 Code Diagnostic Procedure
P0692 Fan control module circuit high input DETECTION CONDITION • The PCM monitors the fan control module signal. If the voltage at PCM terminal 318 remains high, the PCM determines that there is a fan control module circuit problem. POSSIBLE CAUSE • Fan control module malfunction • Connector or terminal malfunction • Short to power supply in the wiring…
Mazda Factory OBD-II DTC P0698 Code Diagnostic Procedure
P0698 EGR valve position sensor circuit or fuel pressure sensor circuit low input DETECTION CONDITION • The PCM monitors the input signal from EGR valve position sensor or fuel pressure sensor. If the voltage from EGR valve position sensor or fuel pressure sensor is less than 0.25 V, the PCM determines that there is a malfunction…
Mazda Factory OBD-II DTC P0699 Code Diagnostic Procedure
P0699 EGR valve position sensor circuit or fuel pressure sensor circuit high input DETECTION CONDITION • The PCM monitors the input signal from EGR valve position sensor or fuel pressure sensor. If the voltage from EGR valve position sensor or fuel pressure sensor is more than 5.25 V, the PCM determines that there is a malfunction…
Mazda Factory OBD-II DTC P1000 Code Diagnostic Procedure
P1000 OBD system readiness test not complete DETECTION CONDITION • The OBD monitors are performed during the OBD Drive Mode. The P1000 will be stored in continuous memory if any of the OBD monitors do not complete their full diagnostic check. POSSIBLE CAUSE • Vehicle is new from the factory • Battery or PCM had recently been disconnected…
Mazda Factory OBD-II DTC P0A3B Code Diagnostic Procedure
P0A3B Generator over temperature DETECTION CONDITION • The PCM monitors the input voltage from the generator signal. If the voltages at PCM deviates from the threshold, the PCM terminal 213 determines that the there is a generator range/performance malfunction. POSSIBLE CAUSE • Generator malfunction • PCM malfunction Diagnostic procedure STEP INSPECTION ACTION 1 VERIFY FREEZE FRAME DATA HAS…
Mazda Factory OBD-II DTC P0642 Code Diagnostic Procedure
P0642 Diesel particulate filter differential pressure sensor circuit or MAP sensor circuit low input DETECTION CONDITION • The PCM monitors the input signal from diesel particulate filter differential pressure sensor or MAP sensor. If the voltage from diesel particulate filter differential pressure sensor or MAP sensor is less than 0.25 V, the PCM determines that there…
Mazda Factory OBD-II DTC P0643 Code Diagnostic Procedure
P0643 Diesel particulate filter differential pressure sensor circuit or MAP sensor circuit high input DETECTION CONDITION • The PCM monitors the input signal from diesel particulate filter differential pressure sensor or MAP sensor. If the voltage from diesel particulate filter differential pressure sensor or MAP sensor is more than 5.25 V, the PCM determines that there…
Mazda Factory OBD-II DTC P0645 Code Diagnostic Procedure
P0645 A/C clutch relay circuit malfunction DETECTION CONDITION • The PCM monitors the input voltage from the A/C clutch relay signal. If the voltages at PCM deviates from the threshold, the PCM terminal 303 determines that the there is a A/C clutch relay range/performance malfunction. POSSIBLE CAUSE • A/C clutch relay malfunction • Connector or terminal malfunction • Open…
Mazda Factory OBD-II DTC P0646 Code Diagnostic Procedure
P0646 A/C clutch relay circuit low input DETECTION CONDITION • The PCM monitors the A/C clutch relay signal. If the voltage at PCM terminal 303 remains low, the PCM determines that there is a A/C clutch relay circuit problem. POSSIBLE CAUSE • A/C clutch relay malfunction • Connector or terminal malfunction • Short to ground in the wiring harness…
Mazda Factory OBD-II DTC P0647 Code Diagnostic Procedure
P0647 A/C clutch relay circuit high input DETECTION CONDITION • The PCM monitors the A/C clutch relay signal. If the voltage at PCM terminal 303 remains high, the PCM determines that there is a A/C clutch relay circuit problem. POSSIBLE CAUSE • A/C clutch relay malfunction • Connector or terminal malfunction • Short to power supply in the wiring…
Mazda Factory OBD-II DTC P0652 Code Diagnostic Procedure
P0652 EGR throttle valve position sensor circuit or air bypass valve position sensor circuit or CMP sensor circuit or CKP sensor circuit low input DETECTION CONDITION • The PCM monitors the input signal from EGR throttle valve position sensor or air bypass valve position sensor or CMP sensor or CKP sensor. If the voltage from EGR…
Mazda Factory OBD-II DTC P0653 Code Diagnostic Procedure
P0653 EGR throttle valve position sensor circuit or air bypass valve position sensor circuit or CMP sensor circuit or CKP sensor circuit high input DETECTION CONDITION • The PCM monitors the input signal from EGR throttle valve position sensor or air bypass valve position sensor or CMP sensor or CKP sensor. If the voltage from EGR…
Mazda Factory OBD-II DTC P0615 Code Diagnostic Procedure
P0615 Starter relay circuit malfunction DETECTION CONDITION • Starter relay power stage – Open circuit • Starter relay power stage – Excess temperature POSSIBLE CAUSE • Starter relay malfunction • Connector or terminal malfunction • Open circuit in the wiring harness between fuse and starter relay terminal B • Open circuit in the wiring harness between starter relay terminal D and…
Mazda Factory OBD-II DTC P0616 Code Diagnostic Procedure
P0616 Starter relay circuit low input DETECTION CONDITION • The PCM monitors the starter relay signal. If the voltage at PCM terminal 108 remains low, the PCM determines that there is a starter relay circuit problem. POSSIBLE CAUSE • Starter relay malfunction • Connector or terminal malfunction • Open circuit in the wiring harness between fuse and starter relay…