P1508 OBD Trouble Code
1 result found
| Type | Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled |
|---|---|
| Description | Idle Speed Low Conditions |
| Cause | DTC P1370, P1371, P1406, P1441 and P1442 not set, no other PCM codes set, EGR system not testing, in closed loop, ECT input from -4°F to 230-F, BARO at least 65 kPa, engine running at least 10 seconds, MAF input from 2-35 g/sec, Actual idle speed under Desired idle speed by at least 80 rpm, VSS input from 30-45 mph, throttle position stable during the test, IAC position at 100-205 counts, engine speed stable (± 75 rpm), then the PCM detected less than a 1.5 g/sec change in MAF sensor input as the IAC position was increased for 2 seconds |
Try also: https://www.obd-codes.com/p1508
