Engine stalling: Codes, Causes & Fixes

P0101 Powertrain The MAF sensor's airflow reading doesn't match what the engine computer expects… Low P0171 Powertrain The engine computer is adding the maximum extra fuel it's allowed on bank 1 and still sees… Moderate P0335 Powertrain The engine computer lost the crankshaft position signal. Expect stalling or a crank-no-start. High P0340 Powertrain The computer lost the camshaft signal on bank 1. Expect long cranking, less power… Moderate P0505 Powertrain The engine computer can't hold idle speed where it wants it – usually a dirty or sticking idle… Low P0562 Powertrain The engine computer sees too little supply voltage – usually a charging, battery or ground… Moderate

P1391 Jeep · Powertrain The PCM keeps briefly losing the cam or crank position signal, which can make your Jeep stumble… Moderate P1404 Chevrolet · Powertrain The electric EGR valve on a Chevy isn't fully closing when the PCM commands it shut. Low P1444 Nissan · Powertrain Nissan's ECM sees fuel vapor flowing to the engine while the purge valve is supposed to be shut. Low P1507 Ford · Powertrain Ford's idle keeps dropping below target even with the idle air valve commanded wide open, often… Low P1516 Chevrolet · Powertrain The electronic throttle didn't move to where the computer commanded, so the engine drops into… Moderate P1519 Honda · Powertrain The PCM found a fault in the idle air control valve (IACV) circuit on a Honda with a cable… Moderate P1602 Volkswagen · Powertrain The engine computer saw its constant battery feed drop too low – usually a disconnected, flat… Low P1603 Toyota · Powertrain Toyota's ECM logged that the engine stopped by itself while running, without the key being… Moderate P1604 Toyota · Powertrain Toyota's ECM recorded a start that took too long, failed, or died within seconds of firing. Moderate P1605 Toyota · Powertrain On newer Toyotas the idle sagged below about 400 rpm; on some older ones it flags the ECM's… Low P1607 Honda · Powertrain The Honda engine computer's self-test found a fault inside its own circuitry. Moderate P1612 Nissan · Powertrain The Nissan ECM and the immobilizer (IMMU or BCM) couldn't complete their ID exchange, so… Moderate P1626 Chevrolet · Powertrain The engine computer lost the 'OK to fuel' signal from the Chevy anti-theft system, so it may… Moderate P1631 Chevrolet · Powertrain The engine computer received the wrong anti-theft password, so it blocks starting or fuel. Moderate P1633 Ford · Powertrain Ford's PCM lost its constant battery feed, so the memory holding learned fuel, idle and shift… Low P1682 Chevrolet · Powertrain The engine computer's two ignition power feeds disagree, which can cause stalling or Reduced… High P1690 Hyundai · Powertrain The engine computer asked the SMARTRA immobilizer unit to check your key and got no answer back. Moderate P1693 Kia · Powertrain The immobilizer couldn't read a valid code from the chip in your Kia key, so the engine isn't… Moderate P2101 Powertrain The throttle plate isn't reaching the position the computer asks for, fast enough or accurately… Moderate P2102 Powertrain Too little current or voltage reaches the throttle motor – usually resistance in the feed, not… Moderate P2103 Powertrain The throttle motor circuit draws too much current – a short, a shorted motor or a plate that… Moderate P2105 Powertrain The engine computer shut the engine off on purpose because it could no longer control… Critical P2107 Powertrain The processor supervising the electronic throttle failed its self-check – a computer fault, not… High P2109 Powertrain The closed-throttle reading no longer matches what the computer learned – usually carbon… Low P2111 Powertrain The throttle plate stayed more open than commanded – a real safety concern until you know why. High P2112 Powertrain The PCM asked the throttle to open, but it stayed shut – the engine can't get air, so it bogs… High P2118 Powertrain The throttle motor is drawing more or less current than the PCM expects to hold the plate where… Moderate P2119 Powertrain The throttle plate isn't reaching the position the PCM commands, or won't spring back to its… Moderate P2135 Powertrain The two position signals inside the throttle body disagree, so the PCM can no longer trust… Moderate P2149 Powertrain The shared supply to the second injector group dropped out, often an intermittent wiring fault… High