Snap-on EAZ0025B02B Error Codes

31 codes from pages 94–427 of the manual

This is the list of warning, fault, error codes the Snap-on manual gives for the EAZ0025B02B diagnostic tool software. Find your code below and open it for what the manual says about its causes and what to do.

Warning codes from p. 94

CodeWhat it meansPage
4-2 Read codes on: ABS warning lamp p. 94
34 ABS warning lamp will stay on for 2 seconds then turn off, main code will flash and pause 0.4 seconds, sub-code will flash and pause 3.6 seconds, stored codes will flash only one time per ignition cycle, cycle key at least once to verify codes. p. 95
3 Rear ABS indicator lamp or brake lamp begins flashing. p. 95
12 Code 12 always flashes first, followed by any current codes p. 98
23 3rd gear oil pressure malfunction 3rd GR. p. 98
13 Code 13 may flash to indicate the presence of history codes, which then follow. p. 98
25 Code 25 flashes after code 13, followed by any current codes p. 98

Fault codes from p. 382

CodeWhat it meansPage
OXS1 Indicates the status of the CHECK MODE HO2 Bank 1 sensor test p. 382
OXS2 Indicates the status of the CHECK MODE HO2 Bank 2 sensor test p. 382

Error codes from p. 427

CodeWhat it meansPage
$00 Not under testing (NOT TST) p. 427
$01 Oil temperature too low (EOT LO) p. 427
$02 Oil temperature too high (EOT HI) p. 427
$03 Engine speed too low (RPM LO) p. 427
$04 Engine speed too high (RPM HI) p. 427
$05 Wrong throttle condition (TPS) p. 427
$06 Throttle position too low (TPS LO) p. 427
$07 Throttle position too hi (TPS HI) p. 427
$08 Wrong vehicle speed condition (VSS) p. 427
$09 Vehicle speed too low (VSS LO) p. 427
$0A Vehicle speed to high. p. 427
$0B Brake switch off (BOO OFF) p. 427
$0C Brake switch on. (BOO ON) p. 427
$0D Wrong shift lever position (MLP POS) p. 427
$20 Any failure is detected "Failure" p. 427
$21 No main shaft speed signal (M-Shaft) p. 427
$22 2nd gear oil pressure malfunction 2nd GR. p. 427
$24 4th gear oil pressure malfunction 4th GR. p. 427
$FF Unknown error (ERROR) p. 427
$0E Test aborted (TESTER command) (ABORTED) p. 427
$0F Test aborted (Wrong condition) (ABORTED) p. 427
$30 4th gear oil pressure switch malfunction condition (4th GEAR) p. 427

Codes and descriptions are taken from the manufacturer’s manual; page numbers link to the PDF. ManualLib is not affiliated with Snap-on. Found a mistake? Report an error.